Results 91 to 100 of about 104,414 (251)

Towards an agnostic algorithm for sampling empirical structure models

Astronomy & Astrophysics
We present an algorithm to efficiently sample the full space of planetary interior density profiles. Our approach uses as few assumptions as possible to pursue an agnostic algorithm.
Wirth Stefano, Morf Luca, Helled Ravit
doaj   +1 more source

The Fine Structure Constant and Habitable Planets

, 2016
We use the existence of habitable planets to impose anthropic requirements on the fine structure constant, $\alpha$. To this effect, we present two considerations that restrict its value to be very near the one observed.
Sandora, McCullen
core   +1 more source

Wide‐Range Adaptive Metal Oxide for Hydrogen Sulfide Detection From Earth to Space‐Like Environments

Advanced Science, EarlyView.
This work presents a gas sensing platform based on Cu‐doped SnO2 microspheres that operates reliably from ambient to space‐like conditions. The sensor maintains performance across vacuum and cryogenic environments, bypassing traditional oxygen‐mediated mechanisms, utilizing direct chemisorption and interfacial charge transfer.
Xi Chen, Jiaxin Chen, Yanghui Liu, Junhao Cao, Yang Yuan, Kaixin Chen, Yilang Ye, Tongshuai Yang, Yongqing Fu, Wei Luo   +9 more
wiley   +1 more source

Coordination of Cyanobacterial Nitrate Assimilation and Photosynthesis by a Novel PsbO‐Interacting Protein PirN

Advanced Science, EarlyView.
PirN was identified as a previously uncharacterized PsbO‐interacting protein specifically induced in nitrate‐grown cyanobacteria. Loss of PirN leads to coordinated downregulation of PsbO and the nitrate reductase NarB, causing decreased PSII activity and impaired growth under nitrate conditions. Complementation with either PsbO or NarB largely restores
Chengcheng Huang, Zhen Xiao, Haitao Ge, Gaojie Wang, Jinghui Dong, Yan Wang, Hang Yang, Xing Wang, Hui Gao, Zhongshu Wang, Huanling Yang, Yuanya Zhang, Xiahe Huang, Wu Xu, Weimin Ma, Wenqiang Yang, Yingchun Wang   +16 more
wiley   +1 more source

Rigid-body Numerical Integration of Io’s Physical Libration Under Multibody Perturbations

The Astronomical Journal
This study investigates the spin–orbit coupling of natural satellites, focusing on Io’s libration as a means of probing its internal structure and tidal responses.
Lidan Zhang, Zhen Zhong, Jianguo Yan, Zhen Yang, Jean-Pierre Barriot   +4 more
doaj   +1 more source

Feline‐Inspired Robot Enabled by Combustion‐Driven Actuators for Agile Motion and High‐Payload Obstacle Traversal

Advanced Science, EarlyView.
Inspired by nature's competitive maneuvers, this study introduces a combustion‐driven soft actuator that powers a multi‐modal “Jump‐and‐Fly Catbot” (JFC). With millisecond response, high‐force output (over 70 times its weight) and precise control (error within 5%), the robot can jump, fly, hover, and escape from challenging environments, achieving ...
Hongkuan Ma, Yang Yang, Zhiguo He, Hongliang Ren, Pengcheng Jiao   +4 more
wiley   +1 more source

Next-generation Improvements in Giant-exoplanet Evolutionary and Structural Models

The Astrophysical Journal
Many evolutionary models of giant exoplanets still rely on simplifying assumptions that are no longer adequate, given detailed constraints from Jupiter, Saturn, and modern exoplanet observations.
Ankan Sur, Roberto Tejada Arevalo, Adam Burrows, Yi-Xian Chen   +3 more
doaj   +1 more source

Electrical conductivity of magnetite‐bearing serpentinite during shear deformation

Geophysical Research Letters, 2012
Electrical conductivity of serpentinite with various amounts of magnetite was measured during shear deformation at high pressure and temperatures (P = 1.0 GPa, T = 750 K) corresponding to mantle wedge conditions to evaluate the contribution of aligned ...
Seiya Kawano, Takashi Yoshino, Ikuo Katayama   +2 more
doaj   +1 more source

Enabling Entry Technologies for Ice Giant Missions [PDF]

The highest priority science goals for Ice Giant missions are: 1) Interior structure of the Planet, and 2) Bulk composition that includes isotopes and noble gases.
Austin, A., Cassell, A., Ellerby, D., Elliott, J., Gage, P, Lobbia, M., Nelessen, A., Prabhu, D., Strauss, B., Venkatapathy, E., Wercinski, P.   +10 more
core   +1 more source

A Framework for Quantifying the Degeneracies of Exoplanet Interior Compositions

, 2010
Several transiting super-Earths are expected to be discovered in the coming few years. While tools to model the interior structure of transiting planets exist, inferences about the composition are fraught with ambiguities.
Rogers, L. A., Seager, S.
core   +1 more source