Results 121 to 130 of about 28,422 (257)

Exploring central star variability of planetary nebulae using gaia photometry. [PDF]

Sci Rep
NegmEldin MA, Ali A, Hamid GM, Essam A.
europepmc   +1 more source

High‐Temperature Nanoindentation of Metals: Assessing Thermal Drift, Frame Compliance, and Chemical Composition Effects on the Reported Mechanical Properties

Advanced Engineering Materials, EarlyView.
Do not let thermal drift and instrument artifacts deceive high‐temperature nanoindentation results. We compare classical Oliver–Pharr and automatic image recognition analyses across steels and a Ni alloy to quantify these effects. Accounting for artifacts reveals systematic softening with temperature, while Cr and Ni additions boost resistance ...
Velislava Yonkova, Steffen Brinckmann, Ruth Schwaiger   +2 more
wiley   +1 more source

A binary-related origin mediated by environmental conditions for blue straggler stars. [PDF]

Nat Commun
Ferraro FR, Lanzoni B, Vesperini E, Dalessandro E, Cadelano M, Pallanca C, Beccari G, Nardiello D, Libralato M, Piotto G.   +9 more
europepmc   +1 more source

Recycling of NiTi Shape Memory Alloys: Fundamental and Technological Aspects of a Vacuum Induction Melting Processing Route

Advanced Engineering Materials, EarlyView.
The present study investigates recycling of NiTi shape memory alloys via vacuum induction melting. An ingot was synthesized from elemental Ni and Ti and subjected to three subsequent remelting cycles. Remelting increases process durations and impurity levels and adversely affects microstructures and functional properties.
Sakia Sophia Noorzayee, Son Tung Mai, Sarath Menon, Braulio Gadiel Sánchez Ortega, Ralf Drautz, Alexander Kauffmann, Gunther Eggeler, Jan Frenzel   +7 more
wiley   +1 more source

Precise orbital parameters,masses, and parallax of the subgiant binary system 12 Persei: a combined spectroscopic-interferometric analysis. [PDF]

Sci Rep
Abushattal AA, Widyan H, Dirk M, Al-Wardat MA, Al-Mashaqbeh M, Mendez RA, Dewi DA, Hussein AM, Abu-Alrob EM.   +8 more
europepmc   +1 more source

Workflow for Design of Experiments‐Based Modeling of Species Transport and Growth Kinetics in GaN Hydride Vapor Phase Epitaxy

Advanced Engineering Materials, EarlyView.
A novel workflow for investigating hydride vapor phase epitaxy for GaN bulk crystal growth is proposed. It combines Design of experiments (DoE) with physical simulations of mass transport and crystal growth kinetics, serving as an intermediate step between DoE and experiments.
J. Tomkovič, G. Lukin, H. Torkashvand, A. Kerschbaum, M. Müller, S. Besendörfer, J. Heitmann, J. Friedrich   +7 more
wiley   +1 more source

The abundances of carbon and nitrogen in the atmospheres of classical Be stars. [PDF]

Astrophys Space Sci
Peters GJ, Gayley KG, Rast RG, Vink JS, Drake JJ.   +4 more
europepmc   +1 more source

Soft Mechanical‐Electrical Logic Using Liquid Metal‐Filled 3D‐Printed Architectures

Advanced Engineering Materials, EarlyView.
We present 3D‐printed soft mechanical–electrical logic elements that use liquid metal–filled silicone tubes actuated by thermoplastic polyurethane/polylactic acid (TPU/PLA) architectures to produce Boolean operations. Complementary normally open and normally closed unit cells perform repeatable binary transitions and can be combined into more complex ...
Christoph Lehmann, Ryan Kalgreen, Laura M. Comella   +2 more
wiley   +1 more source

The Evolution of Binary Stars

The Astrophysical Journal, 1932
openaire   +1 more source

Discovery of the most compact 3+1-type quadruple star system TIC 120362137. [PDF]

Nat Commun
Borkovits T, Rappaport SA, Chen HL, Torres G, Mitnyan T, Kostov VB, Powell BP, Pribulla T, Zasche P, Bíró IB, Csányi I, Czavalinga DR, Dencs Z, Garai Z, Kolář J, Cagaš P, Henzl Z, Kaye T, Kučáková H, Mašek M, Uhlař R.   +20 more
europepmc   +1 more source