Results 111 to 120 of about 1,834,226 (297)
Polar Motion Dynamics on Slow‐Rotating Venus: Signatures of Mantle Flow
AGU AdvancesWith its 1 day lasting 243 days on Earth, Venus is the slowest‐spinning planet in the Solar System and its rotational bulge is anomalously small. A rotational bulge stabilizes the orientation of planets. Having only a tiny stabilizer, the rotational pole
Vojtěch Patočka +2 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar +2 more
wiley +1 more source
Review of The expeditions of the first International Polar Year 1882–83, by William Barr [PDF]
, 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
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Polar federated search: New infrastructure to support the polar community
, 2023 This paper reports how the World Data System International Technology Office (WDS-ITO) has contributed resources in the Polar Research Data Management community.
Melinda Minch +5 more
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Advanced Engineering Materials, EarlyView.Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios +5 more
wiley +1 more source
Oceanic excitations on polar motion: a cross comparison among models
, 2005 Recent studies based on various ocean general circulation models (OGCMs) demonstrate that the oceans are a major contributor to polar motion excitations. In this paper, we analyse and compare observed non-atmospheric polar motion excitations with oceanic
Liao, XH, Wilson, CR, Zhou, YH, Chen, JL
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The Chief Editor welcomes you to a free, green Polar Research [PDF]
, 2010 Polar Research is now an open-access journal, freely available to anyone with a computer and connection to the internet. Now readers around the world will have free access to the latest scientific articles on climate, biodiversity, polar history and ...
Goldman, Helle
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Atmospheric Excitation of Polar Motion [PDF]
International Astronomical Union Colloquium, 2000 AbstractVariations in the angular momentum of the atmosphere in the equatorial plane due to shifts in air mass distribution and changing winds impact the orientation of Earth so that motions of the pole occur on a broad range of time scales. The wind terms have notable diurnal fluctuations, which appear as a tidal signature. Subseasonal fluctuations of
openaire +1 more source
Advanced Engineering Materials, EarlyView.Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth +6 more
wiley +1 more source
Late Pleistocene fossil find in Svalbard: the oldest remains of a polar bear (Ursus maritimus Phipps, 1744) ever discovered [PDF]
, 2009 During recent fieldwork in Svalbard, a well preserved subfossil left mandible of a polar bear (Ursus maritimus Phipps, 1774) was discovered. A 14C age determination shows that it is older than 45 Ky (kilo-years), and an age determination with infrared ...
Wiig, Øystein, Ingólfsson, Ólafur
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