地心游记(A Journey into the Interior of the Earth)简介: "A Journey to the Interior of the Earth" is Jules Verne's classic science fiction adventure about Professor Liedenbrock and his nephew Axel who discover an ancient document written by an Icelandic adventurer who went to the center of ...
Published 10 Jul 2017 DOI: 10.1038/ncomms15989 OPEN Exploring the hidden interior of the Earth with directional neutrino measurements Michael Leyton1,2,3, Stephen Dye4 & Jocelyn Monroe2,3,5 Roughly 40% of the Earth's total heat flow is powered by radioactive decays in the crust and mantle...
The gravitational torque on a spheroid inside such a shell can be analytically calculated. When applied to a simplified model of the earth, the gravitational torque between the mantle and the inner core is found to be enormous*, confirming earlier calculations for realistic earth models based on ...
This ambiguity regarding the interior justifies the distinction between decorator and interior designer (Massey,1997). A subtle gradation determines the relation between the two: if the decorator has less of an impact on a building’s structural identity, this is because to decorate implies a differ...
However, many smaller fires were also evident in the tree-ring record, and more of these types of events occurred during the nineteenth century (and earlier) than during the twen- tieth century. We also identified a shift after the late nineteenth century to potentially more severe fires ...
We present a new class of primal-dual infeasible-interior-point methods for solving linear programs. Unlike other infeasible-interior-point algorithms, the iterates generated by our methods lie in general position in the positive orthant of ℝ2 and are not restricted to some linear manifold. ...
SIAM J Optim 7:86–125 CrossRef Li Y, Terlaky T (2010) A new class of large neighborhood path-following interior point algorithms for semidefinite optimization with \(O(\sqrt{n}\log \frac{Tr(X^{0}S^{0})}{\epsilon })\) iteration complexity. SIAM J Optim 20:2853–2875 CrossRef ...
This plant still plays a considerable role today in herbal and traditional medicine for treatment of various diseases. The therapeutic properties were ascribed to a number of chemicals in the alkaloid class sometime in the mid-1950s [1, 2]. Medicinal plants have played a key role in world ...
The mean density in the winter mixed layer corresponds to the density of the lighter Labrador Sea Water (LSW) class formed in the subpolar gyre after 2000 (ref. 23). SF6 is typically undersaturated in the surface ocean during active water mass formation with saturation values of 86% in ...
An electric rotating machine comprises a stator adapted for receiving stator windings; a rotor rotatable relative to the stator; permanent magnets in the rotor forming magnetic poles; and apertures with a low permeability. Each aperture is for that portion of one of the permanent magnets located in...