Results 111 to 120 of about 2,970,939 (235)
Polarizable Vanadium Dipoles Promote Water Dissociation on Vanadium‐Based Metal Organic Framework
Advanced Functional Materials, EarlyView.The polarization of unpaired V 3d electrons weakens the H─O bond to improve water dissociation by the dual Vδ+:O─H and Pλ−:H─O coupling hydrogen bonds formation and relaxation. P@V‐MOF electrocatalyst shows low overpotentials (94 mV in acid, 178 mV in neutral, and 77 mV in alkaline solutions) with excellent stability for effective overall water ...
Xinjuan Liu +13 more
wiley +1 more source
Assessment of terrestrial water contributions to polar motion from GRACE and hydrological models
, 2012 The hydrological contribution to polar motion is a major challenge in explaining the observed geodetic residual of non-atmospheric and non-oceanic excitations since hydrological models have limited input of comprehensive global direct observations ...
Feng, G. P., Jin, S. G., Hassan, A. A.
core
Excitation of non-atmospheric polar motion by the migration of the Pacific Warm Pool
, 2004 Changes in the annual variation of the Earth's polar motion are found to be largely caused by the variation of the atmospheric angular momentum (AAM). Recent simulation results of oceanic general circulation models further suggest global oceanic effects ...
Liao, XH +8 more
core +1 more source
Joint short-term prediction of polar motion and length of day with multi-task deep learning methods
Earth, Planets and SpaceAccurate prediction of Earth orientation parameters (EOPs) is critical for astro-geodynamics, high-precision space navigation, and positioning. However, the current model prediction accuracy for EOPs is significantly lower than the geodetic technical ...
Sonia Guessoum +6 more
doaj +1 more source
Research on the Application of Atmospheric Motion Vector from MetOp Satellite Series in CMA-GFS
Remote SensingAtmospheric motion vector (AMV) products from EUMETSAT’s MetOp satellite series, including MetOp-B, MetOp-C, and the MetOp-B/C tandem (MetOp-Dual), have been assimilated at many numerical weather prediction centers worldwide.
Jiali Ma, Yan Liu, Xiaomin Wan
doaj +1 more source
Advanced Functional Materials, EarlyView.In situ Auger Electron Spectroscopy resolves oxidation states with high fidelity during the pulsed laser deposition of multivalent perovskite manganate and vanadate heterostructures. The chemical‐state signature is carried by the valence‐electron population of the transition‐metal cation, read out through the relative intensities of Auger fine ...
Harish Kumarasubramanian +1 more
wiley +1 more source
Polar bears observed climbing steep slopes to graze on scurvy grass in Svalbard
, 2017 It is well known that polar bears feed on vegetation. Here, I report novel observations of polar bears grazing on polar scurvy grass (Cochlearia groenlandica) at the foot of a large seabird colony on a cliff on Spitsbergen, Svalbard, in the summers of ...
Stempniewicz, Lech
core
On ice but not broken: Norwegian–Russian relations in polar science since 24 February 2022
Western countries responded to the full-scale Russian attack on Ukraine on 24 February 2022 by imposing strong sanctions to isolate Russia. Norway has adhered to this policy, with exceptions for cooperation on border control, search and rescue, and ...
Misund, Ole Arve
core +1 more source
Historical Foundation and Practical Guideline for Ferroelectric Switching Kinetic Studies
Advanced Functional Materials, EarlyView.The P and U pulses in the conventional PUND measurements are not identical because of the interplay between switching current and the measurement circuit components. This circuit effect can lead to a shift in polarization transients and misinterpreted physics in the switching kinetics.
Yi Liang, Pat Kezer, John T. Heron
wiley +1 more source
Review of The expeditions of the first International Polar Year 1882–83, by William Barr
, 2009 It is probably safe to assume that no readers of Polar Research are unaware that we have just come through a fourth International Polar Year (IPY). All science is, or should be, based on the previous achievements of others, and thus the experiences and ...
Barr, Susan
core +1 more source