Results 41 to 50 of about 38,972 (307)

Cyclic Olefin Copolymers as Versatile Materials for Advanced Engineering Applications

open access: yesAdvanced Functional Materials, EarlyView.
Cyclic olefin copolymers (COCs) are presented as highly versatile materials combining tunable synthesis, excellent optical properties, and mechanical robustness. Their potential spans microfluidics, bioengineering, and advanced electronics, while emerging self‐healing and sustainable solutions highlight future opportunities.
Giulia Fredi   +3 more
wiley   +1 more source

Cancellation analysis of current density in solar active region NOAA10019

open access: yesJournal of Space Weather and Space Climate, 2015
Solar flares are often associated with changes in the fine magnetic structure of the emitting active region. Such topological modification results in variations of both the scaling properties of the fields’ fluctuations, and the fractal dimension of the ...
De Vita Gaetano   +7 more
doaj   +1 more source

Solar active regions: SOHO/CDS and TRACE observations of quiescent coronal loops

open access: yes, 2003
This study focuses on the diagnostic capabilities of the TRACE and SOHO-CDS instruments to describe the physical characteristics of quiescent solar active regions.
G. Del Zanna   +3 more
core   +1 more source

Flare productivity of newly-emerged paired and isolated solar active regions [PDF]

open access: yes, 2007
<p><b>Aims:</b> We investigate whether sunspot regions that emerge near existing ones are more flare productive than those that emerge isolated.</p> <p><b>Methods:</b> We analyse a sample of 2115 new regions ...
Fletcher, L   +8 more
core   +1 more source

Homogenous FACsPbI3 Perovskite Solar Cells Enabled by a Seed‐Facilitated Cation Exchange Strategy

open access: yesAdvanced Functional Materials, EarlyView.
A novel seed‐facilitated cation exchange strategy is designed for homogenous FACsPbI3 perovskites using the biomass‐derived solvent γ‐valerolactone. Pre‐deposited 0D Cs4PbI6 seeds induce rapid nucleation and efficient cation exchange, producing a uniform FA–Cs distribution and significantly reducing defect density, enabling high‐performance and stable ...
Meng Ren   +10 more
wiley   +1 more source

The evolution of a spot–spot-type solar active region which produced a major solar eruption

open access: yesFrontiers in Astronomy and Space Sciences, 2023
Solar active regions are the main sources of large solar flares and coronal mass ejections. It is found that the active regions producing large eruptions usually show compact, highly sheared polarity inversion lines.
Lijuan Liu, Lijuan Liu, Lijuan Liu
doaj   +1 more source

Diffuse component spectra of solar active regions at submillimeter wavelengths

open access: yes, 2015
Solar maps at 212 and 405 GHz obtained by the Solar Submillimetric Telescope (SST) show regions of enhanced brightness temperature, which coincide with the location of active regions.
Kaufmann, P   +6 more
core   +1 more source

Solvent Co‐Intercalation Enabled Ca Storage in MoS2 for Ca‐Ion Batteries

open access: yesAdvanced Functional Materials, EarlyView.
Regulating electrolyte solvation levels enables otherwise non‐intercalatable Ca2+ ions to reversibly co‐intercalate into molybdenum disulfide (MoS2) as ether‐solvated species. The intercalation reversibility is strongly governed by solvent chain length, as demonstrated using diethylene glycol dimethyl ether (G2) and tetraethylene glycol dimethyl ether (
Yudong Luo   +10 more
wiley   +1 more source

Size Distributions of Arcsecond-scale Properties of Solar Flare Ribbons

open access: yesThe Astrophysical Journal
Solar flare ribbons are believed to map the footpoints of newly reconnected magnetic flux tubes; therefore, shedding light on the reconnecting current sheet, which is rarely observed by direct imaging or spectroscopy. Here we study the detailed evolution
Yue Zhang   +3 more
doaj   +1 more source

Slow Solar Wind Connection Science during Solar Orbiter’s First Close Perihelion Passage

open access: yesThe Astrophysical Journal Supplement Series, 2023
The Slow Solar Wind Connection Solar Orbiter Observing Plan (Slow Wind SOOP) was developed to utilize the extensive suite of remote-sensing and in situ instruments on board the ESA/NASA Solar Orbiter mission to answer significant outstanding questions ...
Stephanie L. Yardley   +78 more
doaj   +1 more source

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