Results 171 to 180 of about 186,008 (265)
Field‐Aligned Proton Beams Upstream of the Martian Bow Shock: First Observations
Geophysical Research Letters, Volume 52, Issue 11, 16 June 2025.Abstract We report fast sunward‐propagating energetic proton field‐aligned beams (FABs) observed about one Mars radius upstream of the Martian bow shock, recorded by the Solar Wind Ion Analyzer instrument on the MAVEN spacecraft. The velocity distributions show that all the beams have a bulk parallel speed vB=(1.35±0.21)VS ${v}_{B}=(1.35\pm 0.21){V}_{S}
K. Meziane +7 more
wiley +1 more source
Minimum time attitude slewing maneuvers of a rigid spacecraft [PDF]
, 1988 Feiyue Li, Peter M. Bainum
openalex +1 more source
Solar Terminator Waves Revealed as Dominant Features of Upper Thermospheric Density
Geophysical Research Letters, Volume 52, Issue 11, 16 June 2025.Abstract Observations of solar terminator waves (STWs) in thermospheric mass density (TMD) measurements above 500 km reveal STWs as dominant features of the upper thermosphere. While previous investigations have shown that STWs in the middle‐lower thermosphere have amplitudes on the order of 6%–8% of the background TMD in that region, this study shows ...
D. J. Fitzpatrick +3 more
wiley +1 more source
Nonlinear Proton Dynamics in the Formation of Rising‐Tone EMIC Wave Subpackets
Geophysical Research Letters, Volume 52, Issue 11, 16 June 2025.Abstract Electromagnetic ion cyclotron (EMIC) waves are commonly observed in the Earth's magnetosphere and play a significant role in regulating relativistic electron fluxes. The waveform of EMIC waves comprises amplitude‐modulated wave packets, known as “subpackets.” Despite their prevalence, the underlying physics and associated particle dynamics for
Huayue Chen +10 more
wiley +1 more source
Development and application of NASA's first standard spacecraft computer [PDF]
, 1984 Charles E. Trevathan +4 more
openalex +1 more source
A Roadmap for Biomass‐Driven Development of Sustainable Phase Change Materials
ChemSusChem, Volume 18, Issue 11, June 2, 2025.This comprehensive review advances the scientific understanding of sustainability and circularity in phase change material (PCM) fabrication by providing a strategic framework for developing composites from abundant, renewable resources. By screening biomass‐derived PCMs, carbons, and biopolymers, a roadmap is outlined for the development of ...
Alina Brzęczek‐Szafran +4 more
wiley +1 more source
Self-discharge characteristics of spacecraft nickel—cadmium cells at elevated temperatures [PDF]
, 1986 S.W. Donley, James Matsumoto, W.C. Hwang
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Advanced Photonics Research, Volume 6, Issue 6, June 2025.An enhanced homogenization method for periodic lattices, applicable to any asymmetrical multipart structures, is proposed. This method simplifies intricate gratings into slab waveguides, predicts guided‐mode resonances and bound states in the continuum, without relying on numerical methods.
Atefe Taheri, Mehrdad Shokooh‐Saremi
wiley +1 more source
Waste to Wealth: Electrochemical Innovations in Hydrogen Production From Industrial Wastewater
Global Challenges, Volume 9, Issue 6, June 2025.There is increasing worry regarding the environmental impact of waste from hospital sewage, agricultural runoff, and industrial wastewater. Those wastes can contaminate water ecosystems, harming both human health and aquatic life. By employing an electrochemical method, we can treat these toxic substances in wastewater while simultaneously producing ...
Tesfaye Alamirew Dessie +2 more
wiley +1 more source