Results 61 to 70 of about 42,007 (286)

Nuclear reactions in hot stellar matter and nuclear surface deformation

open access: yes, 2006
Cross-sections for capture reactions of charged particles in hot stellar matter turn out be increased by the quadrupole surface oscillations, if the corresponding phonon energies are of the order of the star temperature.
C. E. Rolfs   +10 more
core   +1 more source

Giant star seismology [PDF]

open access: yes, 2017
The internal properties of stars in the red-giant phase undergo significant changes on relatively short timescales. Long near-uninterrupted high-precision photometric timeseries observations from dedicated space missions such as CoRoT and Kepler have ...
Christensen-Dalsgaard, J., Hekker, S.
core   +2 more sources

Electrochemical Evaluation of Compressed Selective Laser Melted AlSi7Mg and AlSi10Mg Alloys in Chloride Environment

open access: yesAdvanced Engineering Materials, EarlyView.
The corrosion performance of AlSi7Mg and AlSi10Mg alloys produced through selective laser melting (SLM) was examined under compressive stress in a chloride environment. Electrochemical analyses, including open‐circuit potential (OCP), potentiodynamic polarization (CPP), and electrochemical impedance spectroscopy (EIS), were complemented by scanning ...
Femi John Akinfolarin   +2 more
wiley   +1 more source

White-Dwarf Asteroseismology With the Kepler Space Telescope

open access: yesFrontiers in Astronomy and Space Sciences, 2020
In the course of their evolution, white-dwarf stars go through at least one phase of variability in which the global pulsations they undergo allow astronomers to peer into their interiors, making it possible to shed light on their deep inner structure ...
Alejandro H. Córsico   +1 more
doaj   +1 more source

Synthesis of a Novel Thermoresponsive S53P4 Bioactive Glass Extract–Poloxamer 407 Injectable Hydrogels: Assessment of Biocompatibility and Antimicrobial Properties

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates innovative thermoreversible hydrogels derived from S53P4 bioactive glass extracts to aid in the healing of infected diabetic foot wounds. These injectable gels, which gel at body temperature, release beneficial ions and remain stable over time.
Marian G. Vargas Guerrero   +9 more
wiley   +1 more source

Torsional oscillations of neutron stars with highly tangled magnetic fields

open access: yes, 2015
To determine the frequencies of magnetic oscillations in neutron stars with highly tangled magnetic fields, we derive the perturbation equations.
Sotani, Hajime
core   +1 more source

Interaction between Molten Al‐Killed Mn–B Steel and Carbon‐Bonded MgO Refractories Based on Recyclates

open access: yesAdvanced Engineering Materials, EarlyView.
High‐temperature interactions between low‐sulfur Al‐killed Mn–B steel and MgO–C refractories (0 and 50 wt% recyclates) are studied via finger immersion tests (1600 °C). Surface‐active elements influence infiltration. MgO/CaS layer forms, along with spinel and calcium silicate.
Matheus Roberto Bellé   +5 more
wiley   +1 more source

Validating the 1D–3D Coupling Stellar Models via Asteroseismology of 18 Kepler Main-sequence Stars

open access: yesThe Astrophysical Journal
The standard 1D stellar evolution model has poor descriptions of the near-surface layers of stars, and this can be improved by using the atmosphere model computed from 3D hydrodynamical simulations.
Li Zhikai   +3 more
doaj   +1 more source

Peak Bagging of red giant stars observed by Kepler: first results with a new method based on Bayesian nested sampling

open access: yesEPJ Web of Conferences, 2015
The peak bagging analysis, namely the fitting and identification of single oscillation modes in stars’ power spectra, coupled to the very high-quality light curves of red giant stars observed by Kepler, can play a crucial role for studying stellar ...
Corsaro Enrico, De Ridder Joris
doaj   +1 more source

Asteroseismic Investigation on KIC 10526294 to Probe Convective Core Overshoot Mixing

open access: yesThe Astrophysical Journal, 2023
In the overshoot mixing model with an exponentially decreasing diffusion coefficient, the initial value of the diffusion coefficient plays a crucial role.
Qian-Sheng Zhang   +3 more
doaj   +1 more source

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