Results 71 to 80 of about 10,044,096 (256)

Spectroscopic orbits of three dwarf barium stars

open access: yes, 2020
Barium stars are thought to result from binary evolution in systems wide enough to allow the more massive component to reach the asymptotic giant branch and eventually become a CO white dwarf.
North, Pierre   +7 more
core  

High‐Brightness and Ultra‐Long‐Lifetime Spin Quantum Dot Light‐Emitting Diodes Enabled by Efficient Injection of Spin‐Polarized Holes Through a Hybrid Hole Transport Layer

open access: yesAdvanced Science, EarlyView.
This work employs a hybrid hole transport layer to enhance hole transport efficiency, resulting in improved performance for the final device. It achieves an external quantum efficiency of 6.68%, a circularly polarized electroluminescence asymmetry factor of 0.026, and a high luminance of 14,370 cd/cm2, representing the highest luminance reported to ...
Fengqi Qiu   +8 more
wiley   +1 more source

Climate Regimes across the Habitable Zone: A Comparison of Synchronous Rocky M and K Dwarf Planets

open access: yesThe Astrophysical Journal
M and K dwarf stars make up 86% of the stellar population and host many promising astronomical targets for detecting habitable climates in the near future.
Ana H. Lobo, Aomawa L. Shields
doaj   +1 more source

Blue Light Receptor PHR2‐Mediated Spectrum Antiviral Immunity

open access: yesAdvanced Science, EarlyView.
Blue light suppresses RBSDV through the blue‐light receptor ZmPHR2, which interacts with ZmISP in chloroplasts to trigger ROS burst and antiviral defense. The viral effector P6 enhances ZmPHR2–ZmISP interaction, alters their distribution, and suppresses ROS.
Runyi Chen   +17 more
wiley   +1 more source

Pseudo‐Haptic Feedback: Multi‐Modal Approaches to Stiffness Perception and User Experience

open access: yesAdvanced Science, EarlyView.
Can visual deformation substitute for physical haptic feedback? In immersive VR, deformation‐based pseudo‐haptics enables stiffness discrimination comparable to wearable force feedback, while their combination yields the highest performance and presence without increasing workload.
Mehmet Ege Cansev   +4 more
wiley   +1 more source

Identification of Carbon Stars from LAMOST DR7

open access: yesThe Astrophysical Journal Supplement Series
Carbon stars are excellent kinematic tracers of galaxies and play important roles in understanding the evolution of the Galaxy. Therefore, it is worthwhile to search for them in a large number of spectra.
Linlin Li   +8 more
doaj   +1 more source

The determination of the validity of the objective prism spectral classifications for K stars

open access: yes, 2004
A sample of K stars has been taken from several objective-prism plates. This sample will be studied photometrically to answer two basic questions. First, is it feasible to subclassify these stars as K1, K2, K3, ...
Dexter, Matthew
core  

Multi‐Omics Analyses Identify Candidate Genes Associated With Stage‐Specific Quality Formation in Mulching‐Treated Moso Bamboo Shoots

open access: yesAdvanced Science, EarlyView.
Organic mulching reprograms Moso bamboo shoot development, enhancing yield and nutritional quality. This multi‐omics study reveals that coordinated metabolic, transcriptional, and post‐transcriptional regulation drives stage‐specific quality formation, offering comprehensive insights into how this agricultural practice improves crop performance and ...
Bo Wang   +7 more
wiley   +1 more source

Beyond Radical Emitters: Hot‐Exciton Electroluminescence From Singlet Diradicaloids

open access: yesAngewandte Chemie, EarlyView.
The first hot‐exciton mechanism in a singlet diradicaloid is demonstrated in a polychlorinated Thiele hydrocarbon‐based organic light‐emitting transistor. Reverse intersystem crossing involving the T2 and bright singly excited states enables electroluminescence beyond the 25% spin‐statistical limit, leading to remarkable external quantum efficiency ...
Mario Prosa   +12 more
wiley   +2 more sources

White Dwarf Stars

open access: yes, 2017
White dwarf stars are the final stage of most stars, born single or in multiple systems. We discuss the identification, magnetic fields, and mass distribution for white dwarfs detected from spectra obtained by the Sloan Digital Sky Survey up to Data ...
S. O. Kepler   +3 more
core   +1 more source

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