Results 281 to 290 of about 294,421 (332)
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Chemical oscillator as a generalized Rayleigh oscillator
The Journal of Chemical Physics, 2013We derive the conditions under which a set of arbitrary two dimensional autonomous kinetic equations can be reduced to the form of a generalized Rayleigh oscillator which admits of limit cycle solution. This is based on a linear transformation of field variables which can be found by inspection of the kinetic equations.
Shyamolina, Ghosh, Deb Shankar, Ray
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“Oscillating” Metallocene Catalysts: What Stops the Oscillation?
Journal of the American Chemical Society, 2003The 150 MHz (13)C NMR microstructural analysis of polypropylene samples produced with two representative "oscillating" metallocene catalysts of largely different steric hindrance, namely [(2-(3,5-di-tert-butyl-4-methoxyphenyl)indenyl)(2)ZrP](+) and [(2-phenylindenyl)(2)ZrP](+) (P = polymeryl), and the implications on the origin of the stereocontrol are
BUSICO, VINCENZO +6 more
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“Oscillating” Metallocene Catalysts: How Do They Oscillate?
Angewandte Chemie International Edition, 2002Based on the results of a series of propylene polymns. using oscillating metallocene catalysts of type [(2-Ar-indenyl)2ZrCl2] (Ar = C6H5 or 3,5-(t-Bu)2-4-MeO-C6H2) with various cocatalysts (MAO, TIBAl), the oscillating behavior of the zirconocenes is discussed with respect to the rac/meso stereochem. outcome of the obtained polypropylenes.
BUSICO, VINCENZO +5 more
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An autonomously oscillating supramolecular self-replicator
Nature Chemistry, 2022Michael G. Howlett +3 more
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Oscillation frequency in CML and ESCL ring oscillators
IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications, 2001In this paper a model to accurately evaluate even in a pencil-and-paper manner the oscillation frequency of a ring oscillator made up by a CML or ESCL differential gate is proposed. The model allows us to simply estimate the oscillation frequency changes due both to the bias current change and to process tolerances.
ALIOTO M, PALUMBO, Gaetano
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Simultaneous Oscillations in Oscillators
Transactions of the IRE Professional Group on Circuit Theory, 1954An oscillator with two degrees of freedom can, under certain conditions, oscillate simultaneously at two different frequencies. The ratio of the two frequencies may be rational (synchronous oscillations) or irrational (asynchronous oscillations). The conditions necessary for 'simultaneous oscillations are discussed for these two cases.
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Oscillating-water-column wave energy converters and air turbines: A review
, 2016A. Falcão, J. Henriques
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