Results 121 to 130 of about 141,901 (265)

Efficiency of Hydrodynamic Atmospheric Escape in Hot Jupiters and Super-Earths

open access: yesThe Astrophysical Journal
We develop a flexible one-dimensional code to model the escape of hydrogen and helium from a hot Jupiter as a result of photoionization from extreme-ultraviolet (EUV) radiation.
Renata Frelikh, Ruth A. Murray-Clay
doaj   +1 more source

Atmospheric escape from the TRAPPIST-1 planets and implications for habitability. [PDF]

open access: yesProc Natl Acad Sci U S A, 2018
Dong C   +5 more
europepmc   +1 more source

Characterisation of exoplanetary upper atmospheres undergoing hydrodynamic atmospheric escape

open access: yes, 2021
Acknowledgements. CARMENES is an instrument for the Centro Astronómico Hispano-Alemán (CAHA) at Calar Alto (Almería, Spain), operated jointly by the Junta de Andalucía and the Instituto de Astrofísica de Andalucía (CSIC). CARMENES was funded by the German Max-Planck-Gesellschaft (MPG), the Spanish Consejo Superior de Investigaciones Científicas (CSIC),
openaire   +2 more sources

Stress‐Induced Melting Controlled Failure Mechanisms of Methane Hydrate

open access: yesAdvanced Science, EarlyView.
We study methane hydrate via nanoindentation and nuclear magnetic resonance (NMR), finding its regional melting and mechanical properties, challenging existing views on hydrogen‐bonded crystals. Abstract Methane hydrate, a kind of nonstoichiometric crystalline, attracted worldwide attentions as a promising substitute energy. Its Dissociation is thought
Yanlong Li   +9 more
wiley   +1 more source

Addressing Oxygen Embrittlement in Additively Manufactured Titanium via Cu‐Mediated Interstitial Site Engineering

open access: yesAdvanced Science, EarlyView.
A novel “Cu‐mediated interstitial site engineering” strategy is introduced to thermodynamically stabilize hexagonal oxygen (hex‐O) configurations in oxygen‐containing titanium alloys. The hex‐O configuration activates multiple slip systems and enhances dislocation pinning via long‐range repulsion.
Xiaobin Lin   +14 more
wiley   +1 more source

A Systematic Study of Hot O Production and Escape from Martian Atmosphere in Response to Enhanced Extreme-ultraviolet Irradiance from Solar Flares

open access: yesThe Planetary Science Journal
The study of the evolution of Martian atmosphere and its response to EUV irradiation is an extremely important topic in planetary science. One of the dominant effects of atmospheric losses is the photochemical escape of atomic oxygen from Mars ...
Chirag Rathi   +2 more
doaj   +1 more source

The rate of thermal atmospheric escape

open access: yes, 2011
A formula is derived for the rate of thermal atmospheric escape, valid, and asymptotically exact, at low Knudsen number.
openaire   +2 more sources

Microfluidic‐Driven Lipid Nanoparticles for Improved miRNA Delivery via Endo‐Lysosomal Trafficking Optimization

open access: yesAdvanced Science, EarlyView.
This study investigates the impact of various post‐processing methods (filtration, sonication, dialysis, and heating) on lipid nanoparticles produced using microfluidics. The nanoparticles are designed for efficient delivery of miRNA into cells. The work highlights how processing conditions influence nanoparticle stability and quality, providing ...
Alicja Kosik‐Kozioł   +8 more
wiley   +1 more source

Metal-enriched Atmospheres in Warm (Super- and Sub-) Neptunes Induced by Extreme Atmospheric Escape

open access: yesThe Astrophysical Journal
Planet formation impacts exoplanet atmospheres by accreting metals in solid form, leading to atmospheric carbon-to-oxygen ratios (C/O) and sulfur-to-nitrogen ratios (S/N) that deviate from those of their host stars. Recent observations indicate differing
Amy J. Louca, Yamila Miguel
doaj   +1 more source

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