Results 71 to 80 of about 11,557,211 (324)
A Hybrid Ultramicroporous Material Family With Metal‐Controlled Dynamic Behavior
Angewandte Chemie, EarlyView.The hybrid ultramicroporous material (HUM) family NbOFFIVE‐3,3'‐bpy‐M exhibits metal‐dependent dynamic behavior upon exposure to water vapor. Whereas the Co and Ni variants undergo reversible lp→np→lp induced‐fit transformation, Cu and Zn exhibit a more typical np→lp mechanism.
Aizhamal Subanbekova +9 more
wiley +2 more sources
Equatorial spread-F—Recent developments [PDF]
, 1990 215-224Recent developments in understanding the phenomenon of equatorial spread-F are reviewed. Emphasis is on the rocket-borne in situ studies of last decade, several of which were made from SHAR in India. Power spectral features of the electron density
Chandra, H
core
Mechanochemically Disordered Li2Ta2OCl10 Oxyhalide Unlocks Superionic Conductivity (>10 mS.cm−1)
Advanced Energy Materials, EarlyView.This work presents a new crystalline oxyhalide, Li2Ta2OCl10, built from [Ta2OCl10]2− dimers. The disorder induced by ball‐milling drives the dramatic 5000‐fold increase in ionic conductivity to reach 11 mS.cm−1. The material shows promise as a solid electrolyte for batteries and opens new prospects for the discovery of new dimer‐based compounds ...
Clément Morel +11 more
wiley +1 more source
Phase calibration approaches for radar interferometry and imaging configurations: equatorial spread F results [PDF]
Annales Geophysicae, 2008 In recent years, more and more radar systems with multiple-receiver antennas are being used to study the atmospheric and ionospheric irregularities with either interferometric and/or imaging configurations. In such systems, one of the major challenges
J. L. Chau +3 more
doaj +1 more source
In situ studies of electron density during equatorial spread-F
, 1982 A Langmuir probe operated in fixed bias mode was launched onboard a RH-560 rocket from the Sriharikota Range (SHAR, Lat.13° 42'N, Geog. Long.80° 14'E, dip 10°) India on October 1, 1980 at 21h03 IST, to study the electron density profile and the electron ...
Pandey, R. +3 more
core +1 more source
Applied Economic Perspectives and Policy, EarlyView.ABSTRACT This study examines interval selection in the Pasture, Rangeland, and Forage Rainfall Index (PRF‐RI) program and evaluates how uniform premium subsidy rates affect optimal interval selections. Using South Dakota as a case study, we show a trend of increasing selection of nonproduction intervals from 2013 to 2024, raising concerns about program
Whoi Cho, Matthew Diersen
wiley +1 more source
High-resolution coherent backscatter interferometric radar images of equatorial spread F using Capon's method [PDF]
Annales Geophysicae, 2017 We present results of Capon's method for estimation of in-beam images of ionospheric scattering structures observed by a small, low-power coherent backscatter interferometer. The radar interferometer operated in the equatorial site of São Luís, Brazil
F. S. Rodrigues +2 more
doaj +1 more source
, 1983 104-113It is shown that the equatorial range spread-F is due to scattering of radio waves from a series of levels of large plasma density gradients and that the equatorial frequency spread is the decay process of the range spread following the lifting of
Rastogi, R G
core
3D Closed‐Loop Navigation of Magnetic Microswimmers Using Vision‐Derived Depth Feedback
Advanced Intelligent Systems, EarlyView.A planar magnetic microswimmer is navigated in three dimensions under a standard microscope. Image defocus supplies a real‐time depth cue, and model‐predictive control with A* planning steers the body on surfaces and in free swimming. Axial position is regulated by propulsion alone, without magnetic field gradients or extra cameras.
Yasin Cagatay Duygu +2 more
wiley +1 more source
Relationships between pre-sunset electrojet strength, pre-reversal enhancement and equatorial spread-F onset [PDF]
Annales Geophysicae, 2010 The virtual height of the bottom side F-region (h'F) and equatorial spread-F (ESF) onsets at Chumphon (10.7° N, 99.4° E; 3.3° N magnetic latitude) were compared with the behaviour of equatorial electrojet (EEJ) ground strength at Phuket ...
J. Uemoto +4 more
doaj +1 more source