Results 61 to 70 of about 109,159 (299)

Progress in the modeling of Earth and planetary internal magnetic fields

地球与行星物理论评
A majority of the planets in the Solar System are characterized by intrinsic magnetic fields that co-rotate with these celestial bodies. With ongoing advances in human deep-space exploration, magnetic field models have been established for all known ...
Jiawei Gao, Zhaojin Rong, Yong Wei, Yuqi Wang, Yaochen Yue, Zhen Shi, Weidong Gu, Dongquan Wang, Shuaiyu Zhai, Xinzhou Li   +9 more
doaj   +1 more source

Tohoku-Hiroshima-Nagoya planetary spectra library: A method for characterizing planets in the visible to near infrared

, 2009
There has not been a comprehensive framework for comparing spectral data from different planets.Such a framework is needed for the study of extrasolar planets and objects within the solar system.
Arnold, Baldwin, Baudrand, Baudrand, Belton, Bergstralh, Clark, Cousins, Delsanti, DeMeo, Fink, Fink, Gehrz, Grundy, Grundy, H. Okita, Johnson, K. Kurita, K. S. Kawabata, Karkoschka, M. Kino, M. Uemura, McCord, McCord, McCord, Perryman, Pickles, Pieters, Pollack, Protopapa, R. Lundock, Rayner, S. Sato, Seager, Showman, Spencer, Strong, T. Ichikawa, T. Ohsugi, T. Yamashita, Tokunaga, Turnbull, Vernazza, Watanabe, Woolf   +44 more
core   +1 more source

Tuning Defects in Ni‐Doped Maghemite for Enhanced Solar Driven Oxygen Evolution: Insights From Operando X‐Ray Spectroscopies

Advanced Science, EarlyView.
ABSTRACT Maghemite (γ$\gamma$‐Fe2${\rm Fe}_2$O3${\rm O}_{3}$) is a promising non‐precious‐metal‐containing photocatalyst for water oxidation (OER). Despite being less studied than Hematite, it offers similar corrosion resistance and a favorable band structure, along with higher conductivity and the advantage of an adaptable spinel structure.
Francesco Paparoni, Hélène Magnan, Antoine Barbier, Andrea Zitolo, AndreaDi Cicco, Javad Rezvani, Emiliano Fonda   +6 more
wiley   +1 more source

FeCoNiCuPt High‐Entropy Alloy Boosts Photocatalytic Hydrogen Production on Protonated Graphitic Carbon Nitride

Advanced Science, EarlyView.
In this study, FeCoNiCuPt high‐entropy alloy particles (HEA) are loaded onto protonated g‐C3N4 nanosheets (HCN NSs) to construct HEA/HCN composites through an electrostatic self‐assembly method. Protonation treatment enriches the surface of g‐C3N4 nanosheets with abundant active sites and enhances their interfacial charge separation capability ...
Yunzhu Zang, Jiali Ren, Yanjun Xue, Jian Tian   +3 more
wiley   +1 more source

A new era in solar system astronomy with JWST

Nature Communications, 2023
The exploration of our solar system is being radically changed since the beginning of operations of the James Webb Space Telescope (JWST) in mid 2022.
G. L. Villanueva, S. N. Milam
doaj   +1 more source

Outer solar system possibly shaped by a stellar fly-by

, 2018
The planets of our solar system formed from a gas-dust disk. However, there are some properties of the solar system that are peculiar in this context. First, the cumulative mass of all objects beyond Neptune (TNOs) is only a fraction of what one would ...
Bhandare, Asmita, Lacerda, Pedro, Pfalzner, Susanne, Vincke, Kirsten   +3 more
core   +1 more source

Optoelectronic‐Driven van der Waals Ferroelectric Materials‐Based Memory Devices for Retinomorphic and In‐Sensory Hardware

Advanced Science, EarlyView.
2D ferroelectrics materials enabling non‐volatile polarization memory, optical excitability, and neuromorphic processing within a unified material and provides a mechanistic analysis of polarization‐induced band modulation, including photon‐assisted domain reorientation, switching kinetics, and interfacial dipole coupling that governs resistive ...
Parthasarathi Pal, Yeong‐Her Wang, Sanjay Kumar, Themis Prodromakis   +3 more
wiley   +1 more source

Oxygen Isotope Constraints on the Importance of Photochemical Processing in Protoplanetary Disks

The Astronomical Journal
Observations have revealed evidence of photochemical processing in protoplanetary disks. This processing occurs in the photon-dominated layer, the optically thin regions of the disk high above the disk midplane. It remains unclear, however, how much this
Fred J. Ciesla, Eric Van Clepper, Jennifer Bergner, Edwin Bergin   +3 more
doaj   +1 more source

Migration scenarii in extrasolar systems

EPJ Web of Conferences, 2011
In this review talk, I present the theory of type I migration of small mass planets, and its latest developments that open the possibility of outward migration in the inner part of a protoplanetary disk.
Crida A.
doaj   +1 more source

Light‑Driven Propulsion of Graphene Aerogels in Microgravity

Advanced Science, EarlyView.
Ultralight graphene aerogels convert laser light into thrust. Parabolic‐flight experiments directly compare their motion in microgravity and at 1 g, revealing order‐of‐magnitude enhancements in distance, velocity, and transient thrust when weight and friction are removed (∼50 times enhancement).
Omnia Khattab, Rami Elkaffas, Basel Altawil, Omar Alsuwaidi, Afnan Almubashir, Claire Perfetti, Shanavas Shajahan, Marco Braibanti, Sean Swei, Carlo Saverio Iorio, Yarjan Abdul Samad   +10 more
wiley   +1 more source