Now showing items 1-10 of 1299
Paleomagnetic data from the Precordillera of northern Chile: A multiphase rotation history related to a multiphase deformational history
(Elsevier Science, 2020-09-20)
One of the most conspicuous features of the Andean chain is the change in its trajectory from NW-SE to N-S at 18°S known as the Bolivian Orocline. Although the Central Andes rotation pattern (CARP) agrees roughly with the ...
Hanging meniscus rotating disk electrode: A theoretical perspective
(Pergamon-Elsevier Science Ltd, 2019-12)
The hanging meniscus rotating disk has been proposed as a useful experimental configuration for enhancing mass transfer in electrochemical reactions mainly involving monocrystalline electrodes. Notwithstanding its common ...
PANGOLA GRASS AS A ROTATION CROP FOR PINEAPPLE NEMATODE CONTROLPANGOLA GRASS AS A ROTATION CROP FOR PINEAPPLE NEMATODE CONTROL
(University of Puerto Rico Mayagüez Campus Agricultural Experiment Station, 1967)
Time-dependent mass-transfer behaviour under laminar and turbulent flow conditions in rotating electrodes: A CFD study with analytical and experimental validation
(Pergamon-Elsevier Science Ltd, 2019-07)
Results of numerical calculations and their comparison with analytical expressions or experimental data under laminar and turbulent flow conditions are reported. It is predicted the transient and steady-state behaviour of ...
Mass-transfer studies at rotating cylinder electrodes with turbulence promoters
(Elsevier Science Sa, 2011-09)
Mass transfer was studied at a rotating cylinder electrode with different turbulence promoters using the reduction of ferricyanide as a test reaction. Four types of turbulence promoters were examined: expanded plastic ...
Late cenozoic tectonics and paleomagnetism of North Cauca Basin intrusions, Colombian Andes: Dual rotation modes
(ELSEVIER SCIENCE BV, 1996-09-15)
Further paleomagnetic results are reported from 18 sites in Late Tertiary hypabyssal igneous rocks adjacent to the Romeral fault system which forms the eastern boundary of the North Cauca Basin. The paleomagnetic directions ...
Free nilpotent minumim algebras
(Wiley VCH Verlag, 2006-05)
In the present paper we give a description of the free algebra over an arbitrary set of generators in the variety of nilpotent minimum algebras. Such description is given in terms of a weak Boolean product of directly ...
Reinterpretation of the Ordovician rotations in NW Argentina and Northern Chile: A consequence of the Precordillera collision?
Early Paleozoic paleomagnetic data from NW Argentina and Northern Chile have shown large systematic rotations within two domains: one composed of the Western Puna that yields very large (up to 80°) counter-clockwise ...
Passive scalar cascades in rotating helical and non-helical flows
(IOP Publishing, 2013-07)
We study how helicity affects the spectrum of a passive scalar in rotating turbulent flows, using numerical simulations of turbulent flows with or without rotation and with or without injection of helicity. Scaling laws ...
Free vibration and dynamic stability of rotating thin-walled composite beams
(Gauthier-Villars/Editions Elsevier, 2011-05)
The dynamic stability behavior of thin-walled rotating composite beams is studied by means of the finite element method. The analysis is based on Bolotin's work on parametric instability for an axial periodic load. The ...