Results 301 to 310 of about 857,359 (356)

Chemical oscillator as a generalized Rayleigh oscillator

The Journal of Chemical Physics, 2013
We 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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Oscillations within oscillations

Applied Mathematics and Computation, 1993
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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“Oscillating” Metallocene Catalysts:  What Stops the Oscillation?

Journal of the American Chemical Society, 2003
The 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, Van Axel Castelli Valeria, Aprea Paola, CIPULLO, ROBERTA, Segre Annalaura, TALARICO, GIOVANNI, VACATELLO, MICHELE   +6 more
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“Oscillating” Metallocene Catalysts: How Do They Oscillate?

Angewandte Chemie International Edition, 2002
Based 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, CIPULLO, ROBERTA, Kretschmer Winfried P, TALARICO, GIOVANNI, VACATELLO, MICHELE, Van Axel Castelli Valeria   +5 more
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Forced oscillations in oscillator circuits, and the synchronization of oscillators

Journal of the Institution of Electrical Engineers - Part III: Radio and Communication Engineering, 1945
The behaviour of a feedback oscillator circuit under the influence of an injected tone having a frequency close to the natural frequency of oscillation is considered from the point of view of the steady-state equilibrium of the loop transmission circuit.
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Oscillation frequency in CML and ESCL ring oscillators

IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications, 2001
In 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, 1954
An 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.
openaire   +1 more source

Changing El Niño–Southern Oscillation in a warming climate

Nature Reviews Earth & Environment, 2021
W. Cai, A. Santoso, M. Collins, B. Dewitte, C. Karamperidou, J. Kug, M. Lengaigne, M. Mcphaden, M. Stuecker, A. Taschetto, A. Timmermann, Lixin Wu, S. Yeh, Guojian Wang, B. Ng, Fan Jia, Yun Yang, Jun Ying, Xiao‐Tong Zheng, T. Bayr, Josephine R. Brown, A. Capotondi, K. Cobb, Bolan Gan, T. Geng, Y. Ham, F. Jin, H. Jo, Xichen Li, Xiaopei Lin, S. McGregor, Jae‐Heung Park, Karl Stein, Kai Yang, Li Zhang, Wenxiu Zhong   +35 more
semanticscholar   +1 more source

[20] Processing of X-ray diffraction data collected in oscillation mode.

Methods in Enzymology, 1997
Z. Otwinowski, W. Minor
semanticscholar   +1 more source

Decadal Trends in the North Atlantic Oscillation: Regional Temperatures and Precipitation

Science, 1995
J. Hurrell
semanticscholar   +1 more source