Results 81 to 90 of about 11,557,211 (324)
Some Unusual Forms of Development of Equatorial Spread-F [PDF]
, 1984 195-197Besides the normal development of equatorial spread-F at the base of the F-layer and later its extension at higher heights, it has been shown that the spread-F can, at times, start at the peak of the F-Iayer and then extend down during clear ...
Koparkar, P V, Chandra, H
core
Redshifting TADF Emission With a Bora‐Triptycene Lewis Acid
Angewandte Chemie, EarlyView.Bathochromic emission shifting of donor–acceptor and multi‐resonant TADF emitters is achieved by adduct formation with a thia‐bora‐triptycene Lewis acid. TADF properties are retained on adduct formation whilst delivering > 100 nm redshift of the emission.
Mathew J. Cross +4 more
wiley +1 more source
Angewandte Chemie, EarlyView.LiMn2O4${\rm LiMn}_2{\rm O}_4$ is of high interest for sustainable energy storage and conversion. Its mixed‐valence Mn3+${\rm Mn}^{3+}$/Mn4+${\text{Mn}}^{4+}$ structure drives site‐specific behavior at aqueous interfaces, featuring proton‐generating Mn4+${\text{Mn}}^{4+}$ centers and electron‐rich Mn3+${\rm Mn}^{3+}$ sites that render the surrounding ...
K. Nikolas Lausch +3 more
wiley +1 more source
Angewandte Chemie, EarlyView.Click‐to‐release (C2R) chemistry is redirected from payload liberation toward ligand‐directed covalent protein labeling through a transient dihydropyridazine methide (DHP‐methide). This concept opens the way to dual‐functional systems combining covalent target engagement with controlled effector release.
Dóra Kern +9 more
wiley +1 more source
NUMERICAL SIMULATIONS OF LARGE SCALE EQUATORIAL SPREAD F
Acta Physica Sinica, 1996 We have performed numerical simulations of nonlinear evolution of plasma interchange instability in equatorial spread F(ESF) under different conditions. It is shown that the interchange instability resulting from one-or two-dimensional initial density perturbations can grow into plasma bubbles but cannot evolve into the plumelike structures on the west
null HUANG CHAO-SONG, null M.C.KELLEY
openaire +1 more source
Equatorial spread-F initiation: Post-sunset vortex, thermospheric winds, gravity waves
, 2007 We present experimental evidence and modeling results which indicate that eastward thermospheric wind is the primary controlling factor of equatorial spread-F initiation in the post-sunset ionosphere.
Milla, Marco +4 more
core +1 more source
Angewandte Chemie, EarlyView.Atmospheric water harvesting (AWH) under arid conditions requires desiccants that load water below 30% RH and regenerate below 60°C, a performance regime traditionally limited to physisorbents. Here, we show that the inherent hydrolytic instability of M′FSIX‐25‐M coordination networks enable regeneration‐optimized chemisorbents (ROCs) with projected ...
Xiang‐Jing Kong +15 more
wiley +1 more source
Interaction of plasma drifts: A hypothesis for equatorial spread F occurrence
Journal of Space Weather and Space ClimateStudies on the generation mechanisms of post-sunset ionospheric irregularities, which constitute a threat to trans-ionospheric radio propagation, particularly at the African sector, are quite sparse.
Oyeyemi Elijah Oyedola +5 more
doaj +1 more source
Nature of Equatorial Spread-F Irregularities Derived from Spaced Fading Records at Thumba [PDF]
, 1978 266-268Spaced fading records of nighttime F-region echoes over Thumba are compared on spread-F days and non-spread-F days. The fading rate is considerably low on non- spread-F days.
Chandra, H, Rastogi, R G
core
Spread-F and ionization anomaly belt
, 1989 The present investigation attempts to bring out the dynamics of the F-region at magnetic equatorial and low latitudes in the American zone. Data are examined for two sets of nights, one with strong range-type spread at Huancayo another with complete ...
Rastogi, R. G. +2 more
core +1 more source