Results 141 to 150 of about 5,710 (349)

The Starspots and Magnetic Fields of Young Late-F Stars [PDF]

open access: yes
Observations of the magnetic activity of young solar-type stars offer insights into the early history of our Sun, its dynamo activity and planetary impacts.
Hughes, James Edward
core   +1 more source

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

open access: yesAdvanced Functional Materials, Volume 36, Issue 43, 29 May 2026.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner   +9 more
wiley   +1 more source

Exploring the Small-scale Magnetic Fields in the Atmosphere of HD 49385 by Asteroseismic Analysis

open access: yesThe Astrophysical Journal
Recent asteroseismic studies have shown convincing evidence that magnetic fields may exist in the interior of some pulsating red giants. Inspired by this breakthrough, we explored the effect of small-scale magnetic fields on the p -mode oscillations in ...
Yuetong Wang   +4 more
doaj   +1 more source

Laser‐Induced Graphene from Waste Almond Shells

open access: yesAdvanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova   +9 more
wiley   +1 more source

The Relationship of Stellar Radius Inflation to Rotation and Magnetic Starspots at 10–670 Myr

open access: yesThe Astrophysical Journal Letters
Active, low-mass stars are widely observed to have radii that are larger than predicted by standard stellar models. Proposed mechanisms for this radius inflation generally involve stellar magnetism, either in the form of added pressure support in the ...
Lyra Cao, Keivan G. Stassun
doaj   +1 more source

Solar flux emergence : a three-dimensional numerical study

open access: yes, 2008
Flux is continually emerging on the Sun, making its way from the solar interior up into the atmosphere. Emergence occurs on small-scales in the quiet Sun where magnetic fragments emerge, interact and cancel and on large-scales in active regions where ...
Murray, Michelle J.
core  

Near‐Infrared Emitting Lanthanide Catecholate Giant Single Crystals – Morphology Control and Photon Down‐Conversion

open access: yesAdvanced Functional Materials, Volume 36, Issue 43, 29 May 2026.
Controlled syntheses of lanthanide coordination polymers based on the dihydroxybenzoquinone (DHBQ) organic linker afforded large single crystals of Ln‐DHBQ CPs (Ln = Yb, Nd). A novel structural variant of Yb‐DHBQ is identified by means of single crystal diffraction analysis.
Marina I. Schönherr   +7 more
wiley   +1 more source

Weakened Magnetic Braking Signals the Collapse of the Global Stellar Dynamo

open access: yesThe Astrophysical Journal Letters
Weakened magnetic braking (WMB) was originally proposed in 2016 to explain anomalously rapid rotation in old field stars observed by the Kepler mission.
Travis S. Metcalfe   +9 more
doaj   +1 more source

Radiative accretion shocks along nonuniform stellar magnetic fields in classical T Tauri stars [PDF]

open access: bronze, 2013
S. Orlando   +11 more
openalex   +1 more source

Home - About - Disclaimer - Privacy