Results 91 to 100 of about 276 (256)

The Decline and Fall of ROME. V. A Preliminary Search for Star-disrupted Planet Interactions and Coronal Activity at 5 GHz among White Dwarfs within 25 pc

open access: yesThe Astrophysical Journal
The recent discovery of planetesimals orbiting white dwarfs has renewed interest in the final chapters of the evolution of planetary systems. Although observational and theoretical studies have examined the dynamical evolution of these systems, studies ...
Matthew Route
doaj   +1 more source

Programmable Functional Silicification of DNA Origami Nanostructures

open access: yesAdvanced Materials, EarlyView.
This work introduces additional functionality into silica‐coated DNA origami nanostructures using non‐standard silica precursors. A fluorescent precursor enables enhanced intracellular tracking, while a disulfide‐containing reagent yields redox‐responsive, degradable silica coatings.
Anna V. Baptist   +4 more
wiley   +1 more source

Investigating Possible Stellar Coronal Mass Ejections in M-type Dwarfs Using the CARMENES Data Release 1 Spectra

open access: yesThe Astrophysical Journal
Stellar coronal mass ejections (CMEs) have significant impacts on surrounding exoplanets and stellar evolution. For M-type dwarf stars, hosting close-in habitable zones, frequent and intense stellar CMEs may render their potentially habitable planets ...
Dongtao Cao, Shenghong Gu
doaj   +1 more source

Stellar Coronae And Chromospheres In The Era Of Asteroseismology

open access: yes, 2018
Stellar magnetic activity is an important parameter to study as it can give insights into stellar activity cycles and even how the stellar dynamo operates. However, as cool stars evolve along the main sequence, they lose angular momentum due to magnetic braking.
Booth, R. S.   +5 more
openaire   +2 more sources

Negotiating in a Foreign Land: Understanding the Curious Interactions Between Intracellular Mitochondria and Internalized Nanoparticles

open access: yesAdvanced Materials Interfaces, EarlyView.
Therapeutic nano‐drug delivery systems interact with cellular mitochondria in a multitude of ways. While the complexity of such interactions disrupts the mitochondrial electron transport chain and increases reactive oxygen species production, thereby contributing to nanoparticle toxicity, they also present unique theranostic opportunities in diseases ...
Sourav Bhattacharjee
wiley   +1 more source

Empirical Prediction of Plasma Emission Measure Distributions and X-Ray/Extreme-ultraviolet Spectra of Late-type Stars

open access: yesThe Astrophysical Journal
High-energy emission spectra from the outer atmospheres of late-type stars represent an important feature of the stellar activity in several contexts, such as the photoevaporation and photochemistry of planetary atmospheres or the modeling of irradiated ...
A. Maggio   +3 more
doaj   +1 more source

ASTROPHYSICAL PLASMA PHYSICS: UNDERSTANDING THE BEHAVIOR OF MATTER IN EXTREME ENVIRONMENTS

open access: yesWorldwide Journal of Physics, 2023
Astrophysical plasmas—constituting over 99% of visible matter in the universe—exhibit complex behaviors governed by electromagnetic forces, thermodynamic gradients, and dynamic particle interactions, particularly in extreme environments such as stellar ...
Kashif Sabeeh, Gul Rahman
doaj  

Protein Corona Formation on Soft Nanocarriers Under Biomimetic Circulatory Flow

open access: yesAdvanced Materials Interfaces, EarlyView.
A biomimetic venous circulation system is developed to study protein corona formation on soft nanocarriers under physiological shear. Liposomes, PLGA nanoparticles, and lipid‐polymer hybrid nanoparticles acquire largely shared but material‐dependent protein coronas that alter surface properties and suppress cellular uptake, highlighting the importance ...
Anamarija Nikoletić   +7 more
wiley   +1 more source

Reconnection-driven energy cascade in magnetohydrodynamic turbulence. [PDF]

open access: yesSci Adv, 2022
Dong C   +5 more
europepmc   +1 more source

Home - About - Disclaimer - Privacy