Results 111 to 120 of about 1,859,004 (334)

Solar and Solar-Like Oscillations: Theory [PDF]

Highlights of Astronomy, 1986
AbstractSolar five-minute oscillations provide a means of testing theoretical models of the sun. By judiciously combining data from low-degree modes, properties of the central and surface regions of the sun can be inferred separately. In principle, it should be possible to draw similar inferences from other stars, once adequate data are available ...
openaire   +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

Degradation Mechanisms Associated with Electron‐Blocking Layers in Inverted Perovskite Solar Cells

Advanced Science, EarlyView.
The effects of the three typical EBLs NiOx, PTAA, and 2PACz on the photovoltaic performance and degradation mechanisms are investigated under light soaking and solar‐thermal cycling conditions of corresponding PSCs, demonstrating that 2PACz is the best EBL due to the better interface contact and lower lattice distortion.
Xiongzhuo Jiang, Jie Zeng, Kun Sun, Simon Alexander Wegener, Zerui Li, Guangjiu Pan, Sarathlal Koyiloth Vayalil, Matthias Schwartzkopf, Baomin Xu, Peter Müller‐Buschbaum   +9 more
wiley   +1 more source

Dominance of 2 Minute Oscillations near the Alfvén Surface

The Astrophysical Journal Letters
Alfvén waves, considered one of the primary candidates for heating and accelerating the fast solar wind, are ubiquitous in spacecraft observations, yet their origin remains elusive.
Zesen Huang, Marco Velli, Chen Shi, Yingjie Zhu, B. D. G. Chandran, Trevor Bowen, Victor Réville, Jia Huang, Chuanpeng Hou, Nikos Sioulas, Mingzhe Liu, Marc Pulupa, Sheng Huang, Stuart D. Bale   +13 more
doaj   +1 more source

Hydrophobicity Modulated Interfacial Water Distribution for Enhanced Kinetics of HER

Advanced Science, EarlyView.
In electrocatalysis, hydrophilic structures improve interfacial water management by forming a continuous, compact water film that facilitates proton/hydrogen transport, thereby lowering the effective adsorption free energy of H*. By contrast, hydrophobic structures enable rapid gas transport and promote the capture and local enrichment of gaseous ...
Yucheng Dong, Xinfa Wei, Xiangdong Xue, Hanxiao Wang, Qing Dong, Jian Liu   +5 more
wiley   +1 more source

Decoupling Intrinsic Molecular Efficacy From Platform Effects: An Interpretable Machine Learning Framework for Unbiased Perovskite Passivator Discovery

Advanced Science, EarlyView.
This study establishes an interpretable machine learning framework that disentangles the intrinsic molecular efficacy of passivators from experimental platform effects—enabling unbiased, high‐throughput discovery of effective perovskite surface modifiers.
Jing Zhang, Ziyuan Li, Shan Gao, Zhen Zhu, Jing Wang, Xiangmei Duan   +5 more
wiley   +1 more source

An Investigation of Equivalence Principle Violations Using Solar Neutrino Oscillations in a Constant Gravitational Potential

, 1996
Neutrino oscillations induced by a flavor-dependent violation of the Einstein Equivalence Principle (VEP) have been recently considered as a suitable explanation of the solar electron-neutrino deficiency.
A. Acker, A. Halprin, A. Halprin, G. L. Fogli, H. Minakata, H. W. Zaglauer, Hisakazu Minakata, J. N. Bahcall, J. N. Bahcall, J. N. Bahcall, J. N. Bahcall, J. R. Mureika, J. R. Mureika, J. R. Mureika, L. Wolfenstein, M. Gasperini, Myron L. Good, N. Butler, R. B. Mann, S. P. Mikheyev, S. Weinberg, V. Barger   +21 more
core   +3 more sources

Solar-like Oscillations in Semiregular Variables [PDF]

Astrophysics and Space Science, 2003
Power spectra of the light curves of semiregular variables, based on visual magnitude estimates spanning many decades, show clear evidence for stochastic excitation. This supports the suggestion by Christensen-Dalsgaard et al. (2001) that oscillations in these stars are solar-like, i.e., stochastically excited by convection, with mode lifetimes ranging
openaire   +2 more sources

Advancing Energy Materials by In Situ Atomic Scale Methods

Advanced Energy Materials, Volume 15, Issue 11, March 18, 2025.
Progress in in situ atomic scale methods leads to an improved understanding of new and advanced energy materials, where a local understanding of complex, inhomogeneous systems or interfaces down to the atomic scale and quantum level is required. Topics from photovoltaics, dissipation losses, phase transitions, and chemical energy conversion are ...
Christian Jooss, Michael Seibt, Martin Wenderoth, Oliver Bünermann, Ole Bunjes, Till Domröse, Christian Eckel, Francesca Falorsi, Christoph Flathmann, Monica Kolek Martinez de Azagra, Matthias Krüger, Jonas Lindner, Tobias Meyer, Claus Ropers, Ulrich Ross, Kai Rossnagel, Sreeju Sreekantan Nair Lalithambika, Simone Techert, Georg A. Traeger, Cynthia Volkert, R. Thomas Weitz, Alec M. Wodtke   +21 more
wiley   +1 more source

Helioseismic Properties of Dynamo Waves in the Variation of Solar Differential Rotation

The Astrophysical Journal
Solar differential rotation exhibits a prominent feature: its cyclic variations over the solar cycle, referred to as zonal flows or torsional oscillations, are observed throughout the convection zone.
Krishnendu Mandal, Alexander G. Kosovichev, Valery V. Pipin   +2 more
doaj   +1 more source