Results 91 to 100 of about 9,183 (293)

Diffusion-free Dynamics in Rotating Spherical Shell Convection Driven by Internal Heating and Cooling

The Astrophysical Journal
The bulk properties of convection in stellar and giant planet interiors are often assumed to be independent of the molecular diffusivities, which are very small.
Neil T. Lewis, Tom Joshi-Hartley, Steven M. Tobias, Laura K. Currie, Matthew K. Browning   +4 more
doaj   +1 more source

The Radiation Environment of Exoplanet Atmospheres

Challenges, 2014
Exoplanets are born and evolve in the radiation and particle environment created by their host star. The host star’s optical and infrared radiation heats the exoplanet’s lower atmosphere and surface, while the ultraviolet, extreme ultraviolet and X ...
Jeffrey L. Linsky
doaj   +1 more source

The effect of 12C + 12C rate uncertainties on the evolution and nucleosynthesis of massive stars

, 2012
[Shortened] The 12C + 12C fusion reaction has been the subject of considerable experimental efforts to constrain uncertainties at temperatures relevant for stellar nucleosynthesis.
A. Hungerford, Aguilera, Aikawa, Angulo, Arcoragi, Arnett, Arnett, Arnett, Arnett, Barrón-Palos, Bennett, Betts, Busso, C. Fryer, Caughlan, Chieffi, Clayton, Cooper, Couch, Dayras, de Jager, Descouvemont, Diaz-Torres, Diaz-Torres, Dillmann, Eggenberger, El Eid, El Eid, F. Herwig, F. X. Timmes, Ferguson, Fryer, Fuller, Fynbo, G. Rockefeller, Gasques, Grevesse, Gropp, Heger, Hirschi, Hirschi, Hix, Iapichino, Iliadis, Imanishi, Imbriani, Imbriani, Itoh, Itoh, Jaeger, Jiang, Jiang, K. Nomoto, Kondo, Kunz, Käppeler, Lamb, Limongi, M. E. Bennett, M. Pignatari, M. Wiescher, Maeder, Mauron, Meynet, Michaud, Montes, Mukhamedzhanov, Nugis, Oda, Perez-Torres, Peters, Pignatari, Prantzos, R. Hirschi, Raiteri, Raiteri, Rauscher, Rauscher, Rauscher, Rogers, S. Diehl, Spillane, Strieder, Strieder, Terrasi, The, The, Tinsley, Travaglio, Truran, Truran, Tur, Vink, Woosley, Woosley, Woosley, Xu, Yakovlev, Young   +98 more
core   +1 more source

Cascade‐Responsive MXene@Cu‐MOF Heterostructure Integrates Antioxidant Activity, Infection Control, and Vascularization for Tracheal Repair

Advanced Science, EarlyView.
A cascade‐responsive MXene@Cu‐MOF/GelMA hydrogel is engineered as a “skeleton–backpack” platform for extensive tracheal repair. The MXene framework scavenges postoperative ROS and converts NIR light into mild hyperthermia, while the Cu‐MOF component provides pH/NIR‐responsive Cu2+ dosing for infection control, angiogenesis, and chondrogenesis.
Liang Guo, Yingran Shen, Jiaoyu Yi, Juanjuan Li, Ziming Wang, Erji Gao, Siqiang Zheng, Zhe‐Sheng Chen, Bo Tao   +8 more
wiley   +1 more source

Magnetic Activity Evolution of Solar-like Stars. II. Sph–Ro Evolution of Kepler Main-sequence Targets

The Astrophysical Journal
There is now a large sample of stars observed by the Kepler satellite with measured rotation periods and photometric activity index S _ph . We use this data, in conjunction with stellar interiors models, to explore the interplay of magnetism, rotation ...
Savita Mathur, Ângela R. G. Santos, Zachary R. Claytor, Rafael A. García, Antoine Strugarek, Adam J. Finley, Quentin Noraz, Louis Amard, Paul G. Beck, Alfio Bonanno, Sylvain N. Breton, Allan S. Brun, Lyra Cao, Enrico Corsaro, Diego Godoy-Rivera, Stéphane Mathis, Dinil B. Palakkatharappil, Marc H. Pinsonneault, Jennifer van Saders   +18 more
doaj   +1 more source

Opacity Effects on Pulsations of Main-Sequence A-Type Stars

Atoms, 2018
Opacity enhancements for stellar interior conditions have been explored to explain observed pulsation frequencies and to extend the pulsation instability region for B-type main-sequence variable stars.
Joyce A. Guzik, Christopher J. Fontes, Chris Fryer   +2 more
doaj   +1 more source

Sub‐Unit‐Cell Logic Governs Transport in TPMS Architectures

Advanced Science, EarlyView.
ABSTRACT Next‐generation energy, thermal, and chemical systems require architectures capable of highly efficient transport across multiple length scales. Triply periodic minimal surfaces (TPMS), first conceptualized in 1865, offer inherently scalable geometries with exceptional transport potential, yet mechanistic links between topology and performance
Haozhang Zhong, Yipei He, Jiaxuan Wang, Chenyi Qian, Gerd E Schröder‐Turk, Raj Das, Junye Shi, Qi Tang, Zheda Ning, Wenjue Yi, Chuanwei Li, Jiangping Chen, Zeyao Chen, Binbin Yu, Jian LU, Jianfeng Gu, Ma Qian   +16 more
wiley   +1 more source

Properties of Turbulent Convection and Large-scale Flows in a Rotating F-type Star Revealed by 3D Realistic Radiative Hydrodynamic Simulations

The Astrophysical Journal
The nonlinear coupling between stellar convection and rotation is of great interest because it relates to understanding both stellar evolution and activity. We investigate the influence of rotation and the Coriolis force on the dynamics and thermodynamic
Irina N. Kitiashvili, Alexander G. Kosovichev, Alan A. Wray   +2 more
doaj   +1 more source

A High‐Performance and Fully Recyclable Supramolecular Nanofibrous Membrane for Multifunctional Air Filtration

Advanced Science, EarlyView.
A green, thermoreversible self‐assembly strategy yields a multifunctional and recyclable supramolecular nanofibrous membrane. Graphene oxide (GO) nanosheet acts as a heterogeneous nucleation‐templating agent, simultaneously modulating the supramolecular crystal packing while tailoring the nanofibrous architecture for elite performance.
Wenjing Sun, Ding Yuan, Jiaqi Wan, Junyu Chen, Zhen Yan, Yinuo Yan, Senjie Dong   +6 more
wiley   +1 more source

Concerted Proton and Electron Transfer in Heterogeneous Electrocatalytic CO2 Reduction

Angewandte Chemie, EarlyView.
Concerted proton‐electron transfer (CPET) enables CO2‐to‐CO conversion with significantly reduced energy cost compared to cation‐stabilized pathways. Under controlled mass transport of proton donors, CPET dominates at modest potentials. At higher overpotentials, a cation‐stabilized pathway is found to dominate.
Seonmyeong Noh, Gong Zhang, Megan Kelly, Marcel Schreier   +3 more
wiley   +2 more sources