Results 31 to 40 of about 389,431 (321)

Timing of Svecofennian crustal growth and collisional tectonics in Åland, SW Finland [PDF]

open access: yesBulletin of the Geological Society of Finland, 2004
In an effort to quantify the time parameter in the tectonomagmatic evolution of what has been called the Southern Svecofennian Arc Complex (SSAC) of SW Finland, advanced radiometric dating techniques have here been applied to rock groups of key ...
C. Ehlers, T. Skiöld, M. Vaasjoki
doaj   +1 more source

The decompression of the outer neutron star crust and r-process nucleosynthesis

open access: yes, 2011
The rapid neutron-capture process, or r-process, is known to be fundamental for explaining the origin of approximately half of the A>60 stable nuclei observed in nature. In recent years nuclear astrophysicists have developed more and more sophisticated r-
Arcones   +34 more
core   +1 more source

The Crustal Rigidity of a Neutron Star, and Implications for PSR 1828-11 and other Precession Candidates [PDF]

open access: yes, 2002
We calculate the crustal rigidity parameter, b, of a neutron star (NS), and show that b is a factor 40 smaller than the standard estimate due to Baym & Pines (1971).
Bennett Link   +11 more
core   +3 more sources

Resonant Shattering of Neutron Star Crusts [PDF]

open access: yes, 2011
The resonant excitation of neutron star (NS) modes by tides is investigated as a source of short gamma-ray burst (sGRB) precursors. We find that the driving of a crust-core interface mode can lead to shattering of the NS crust, liberating ~10^46-10^47 ...
Bondarescu, Ruxandra   +4 more
core   +3 more sources

An ion microprobe U-Th-Pb study of zircon xenocrysts from the Lahtojoki kimberlite pipe, eastern Finland [PDF]

open access: yesBulletin of the Geological Society of Finland, 2001
Eleven relatively large (diameter 1–2 mm) zircon grains extracted from the Lahtojoki kimberlite pipe (Eastern Finland Kimberlite Province) have been analysed by the ion microprobe NORDSIM for their U- and Pb- isotopic composition.
P. Peltonen, I. Mänttäri
doaj   +1 more source

Collisional stripping of planetary crusts [PDF]

open access: yes, 2017
Geochemical studies of planetary accretion and evolution have invoked various degrees of collisional erosion to explain differences in bulk composition between planets and chondrites.
Carter, Philip J.   +4 more
core   +3 more sources

Copper‐based Materials for Photo and Electrocatalytic Process: Advancing Renewable Energy and Environmental Applications

open access: yesAdvanced Functional Materials, EarlyView.
Cu‐based catalysts as a cornerstone in advancing sustainable energy technologies are fully reviewed in this manuscript, highlighting their potential in photo‐ and electrocatalysis. It includes metallic copper, copper oxides, copper sulfides, copper halide perovskites, copper‐based metal–organic frameworks (MOFs), and covalent organic frameworks (COFs),
Jéssica C. de Almeida   +16 more
wiley   +1 more source

Efficacy of crustal superfluid neutrons in pulsar glitch models [PDF]

open access: yes, 2015
In order to assess the ability of purely crust-driven glitch models to match the observed glitch activity in the Vela pulsar, we conduct a systematic analysis of the dependence of the fractional moment of inertia of the inner crustal neutrons on the ...
Hooker, J., Li, Bao-An, Newton, W. G.
core   +1 more source

MnI‐Functionalized Covalent Organic Framework as Efficient Electrocatalyst for CO2 Reduction in a Catholyte‐Free Zero‐Gap Electrolyzer

open access: yesAdvanced Functional Materials, EarlyView.
This work demonstrates the successful integration of a phenanthroline‐based 2D COF with MnI catalytic sites into a catholyte‐free membrane‐electrode‐assembly cell for CO2 electroreduction. The crystalline COF actively suppresses Mn⁰–Mn⁰ dimerization, achieving a turnover frequency of 617 h⁻¹ at 2.8 V (full‐cell potential), and enabling stable operation.
Laura Spies   +8 more
wiley   +1 more source

A suspicious dark lesion in a boy

open access: yesClinical Case Reports, 2019
The presence of history of hyperpigmented crust in a patient with a history of adequate hygiene is typical of terra firma‐forme dermatosis. The treatment is the rubbing of the skin with isopropyl alcohol (removal of the hyperpigmented brown crust ...
Vera Tengattini   +4 more
doaj   +1 more source

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