Results 71 to 80 of about 316,672 (296)

Harnessing Fungal Biowelding for Constructing Mycelium‐Engineered Materials

Advanced Engineering Materials, EarlyView.
Mycelium‐bound composites (MBCs) offer low‐carbon alternatives for construction, yet interfacial bonding remains a critical challenge. This review examines fungal biowelding as a biocompatible adhesive, elucidating mycelium‐mediated interfacial mechanisms and their role in material assembly. Strategies to optimize biowelding are discussed, highlighting
Xue Brenda Bai, Xinrui Sarah Niu, Zhao Qin   +2 more
wiley   +1 more source

Long-term Evolution in Ionization of Ejecta Illuminated by Eta Carinae

The Astrophysical Journal
Changes in the flux and spectrum of Eta Carinae ( η Car) since 1900 have been attributed to the evolution of the central binary by some. Others suggest evolution in the occulting ejecta.
Augusto Damineli, Noel D. Richardson, Felipe Navarete, Theodore. R. Gull, Eduardo Fernández-Lajús, Anthony F. J. Moffat, Desmond J. Hillier, Gerd Weigelt, Michael F. Corcoran   +8 more
doaj   +1 more source

Fragmentation in Massive Star Formation [PDF]

Science, 2004
Studies of evolved massive stars indicate that they form in a clustered mode. During the earliest evolutionary stages, these regions are embedded within their natal cores. Here we present high-spatial-resolution interferometric dust continuum observations disentangling the cluster-like structure of a young massive star–forming region.
Beuther, H., Schilke, P.
openaire   +3 more sources

Low‐Cost, Large‐Scale Nanoporous Metals by Mechanical Alloying, Oxide Reduction, and Dealloying of Powders

Advanced Engineering Materials, EarlyView.
Powder metal processing provides scalable advantages in nanoporous (np) metal development. Mechanical alloying is used to produce unique precursors for hybrid nanopore formation by oxide reduction and dealloying. As demonstrated in np Ag, this approach improves process efficiency while promoting smaller ligaments and larger pores, both of which are ...
Mark A. Atwater, Oliver A. Fowler
wiley   +1 more source

Investigation of Oxygen‐Free Wetting Behavior of Aluminum on Copper via Molecular Dynamics Simulations and Experiments

Advanced Engineering Materials, EarlyView.
The wettability of aluminum droplets (Al) on different copper substrates (Cu), where liquid Al spreads on solid Cu surfaces to form a liquid–solid interface, is studied numerically and experimentally. The experimental and numerical results show good agreement in the fast‐spreading regime.
Shan Lyu, Timon Steinhoff, Finn‐Lennard Janthur, Sarah Seffer, Jörg Hermsdorf, Christian Klose, Ludger Overmeyer, Hans‐Jürgen Maier, Nina Merkert   +8 more
wiley   +1 more source

Critical Metallicity of Cool Supergiant Formation. I. Effects on Stellar-mass Loss and Feedback

The Astrophysical Journal, 2023
This paper systematically studies the relation between metallicity and mass loss of massive stars. We perform one-dimensional stellar evolution simulations and build a grid of ∼2000 models with initial masses ranging between 11 and 60 M _⊙ and absolute ...
Po-Sheng Ou, Ke-Jung Chen, You-Hua Chu, Sung-Han Tsai   +3 more
doaj   +1 more source

Parameter Variation in Planetary Ball Milling of Titanium Aluminide Powder in XHV‐Adequate Atmosphere

Advanced Engineering Materials, EarlyView.
This study investigates the effects of milling parameters, including rotational speed, milling duration, and ball‐to‐powder ratio, on TiAl particle size and morphology in an XHV‐equivalent atmosphere. The creation of oxide‐free surfaces enhances the mechanical properties of green bodies.
Jytte Möckelmann, Armin Piwek, Julius Peddinghaus, Kai Brunotte, Bernd-Arno Behrens   +4 more
wiley   +1 more source

The Timescales of Embedded Star Formation as Observed in STARFORGE

The Astrophysical Journal
Star formation occurs within dusty molecular clouds that are then disrupted by stellar feedback. However, the timing and physical mechanisms that govern the transition from deeply embedded to exposed stars remain uncertain.
Tobin M. Wainer, Julianne J. Dalcanton, Michael Y. Grudić, Stella S. R. Offner, Adam Smercina, Benjamin F. Williams, L. Clifton Johnson, J. Peltonen, Eric W. Koch, Kartik R. Neralwar   +9 more
doaj   +1 more source

Two step ejection of massive stars and the issue of their formation in isolation

, 2010
In this paper we investigate the combined effect of massive binary ejection from star clusters and a second acceleration of a massive star during a subsequent supernova explosion. We call this the "two-step-ejection" scenario.
Blaauw, Chevalier, Clarke, de Donder, de Wit, de Wit, Gies, Gvaramadze, Gvaramadze, Heggie, Hoffer, Hoogerwerf, Iben, Jan Pflamm-Altenburg, Kroupa, Lada, Leonard, Mikkola, Mikkola, Parker, Pavel Kroupa, Pflamm-Altenburg, Portegies Zwart, Poveda, Schilbach, Stone, Tauris, Zwicky   +27 more
core   +1 more source

The stability of massive stars [PDF]

Symposium - International Astronomical Union, 1994
An investigation of the stability properties of stellar models describing massive stars is motivated observationally by the necessity to explain the observed Humphreys - Davidson (HD) limit and the variability of the most massive stars known, i.e. the existence of luminous blue variables (LBVs).
W. Glatzel, M. Kiriakidis, K. J. Fricke
openaire   +1 more source