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Fifty-year study of the Peierls-Nabarro stress

Author: Nabarro, FRN Date: 30 Aug 1997 The origin of the Peierls model and its relation to that of Frenkel and Kontorova are described. Within this model there are three essentially different formulae for the stress required to move a dislocation rigidly through a perfect lattice, ... Read more
Generating MnO2 nanoparticles using simulated amorphization and recrystallization

Author: Sayle, TXT ; Catlow, CRA ; Maphanga, RR ; Ngoepe, PE ; Sayle, DC Date: 21 Sep 2005 Models of MnO2 nanoparticles, with full atomistic detail, have been generated using a simulated amorphization and recrystallization strategy. In particular, a 25,000-atom "cube" of MnO2 was amorphized (tension-induced) under molecular dynamics ... Read more
Ongeluk basaltic andesite formation in Griqualand West, South Africa: Submarine alteration in a 2222 Ma Proterozoic sea

Author: Cornell, DH ; Schutte, SS ; Eglington, BL Date: Jul 1996 The Ongeluk lavas form part of the Palaeoproterozoic Transvaal-Griqualand West supracrustal sequence of the Archaean Kaapvaal Craton of South Africa. They form a thick shallow-marine volcanic sequence of pillow lava, massive flows and ... Read more
Time constant of logarithmic creep and relaxation

Author: Nabarro, FRN Date: 15 Jul 2001 Under certain conditions, the plastic extension of a sample subjected to a constant stress is to a good approximation proportional to the logarithm of the time. Similarly, if a sample is plastically strained and unloaded, there are changes ... Read more

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Browsing by Subject "Multidisciplinary"

Browsing by Subject "Multidisciplinary"

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