oscillations forced oscillations resonance

... fundamental parametric resonance J of Sound and Vib ratio n (1988), 120 (1), 63-93 Nguyen Van D in h Interaction between parametric and forced oscillations in fundamental resonance Journal of ... under consideration For sm all values of a the forced component is dominated and the corresponding parts of resonance curves are sim ilar to those of forced oscillation For large values of the influence ... th e in t e r a c t io n b e t w e e n tw o oscillations, the resonance curve has the form of an upward parabola T h e stability of the stationary oscillations obtained is studied by using the...

Ngày tải lên: 08/04/2015, 15:28

... variations for the system (1.9) are dồQỵ Ằ Stability of Stationary Oscillations sin2 Ỏ [216 ] Interaction between parametric and forced oscillations 217 F i g (2.1) dò = —(u' +v' sin2y)0)ôa—[2vcos2y)0+pcos(y0-ỏ)]ỏy, ... Inside the region of the parametric resonance, the parametric excitation caused by the first mode (x) strongly influences the stability of the stationary forced oscillations of the second mode (j>) ... vice versa Outside the region of the parametric resonance, the mechanism of parametric excitation does not influence the stability of the forced oscillations 2) The jump phenomenon of the amplitudes...

Ngày tải lên: 08/04/2015, 15:28

... results in forced and subharmonic oscillations for relay feedback systems are given The idea from forced oscillations is applied to design sinusoidal dither signals that will result in stable oscillations ... these areas are given as follows: A Forced and Subharmonic Oscillations under Relay Feedback The necessary and sufficient conditions for forced and subharmonic oscillations (FO and SO, respectively) ... presents the results on the forced and subharmonic oscillations in an externally driven single loop relay feedback system (RFS) In the subsequent Chapter 3, the idea of forced oscillations is extended...

Ngày tải lên: 11/09/2015, 08:59

... depolarizes the membrane [18] – thus, store oscillations are transformed into membrane potential oscillations; (c) membrane potential can modulate store excitability ⁄ oscillations by modulating Ca2+ and ... we now consider how Ca2+ oscillations can be synchronized across multiple cells in a syncytium Synchronization by voltage-modulated store release Synchronization of Ca2+ oscillations One reported ... increased cytosolic Ins(1,4,5)P3 concentration causing generation of oscillations in cell Importantly, although the frequency of the oscillations in cell might be different to that of cell 1, coupled...

Ngày tải lên: 16/02/2014, 09:20

... neuron–astrocyte cocultures, astrocytes and neurons show Ca2+ oscillations with different frequency and temporal patterns; that is, Ca2+ oscillations in astrocytes are less frequent and synchronous ... astrocytes (red traces shown as and 2) also show slower and less synchronous Ca2+ oscillations However, the synchronous Ca2+ oscillations in astrocytes are unaffected even when neuronal activities are ... Ca2+ oscillations seen in the presence of TTX or in purified astrocytes were abolished by the ATP-degrading enzyme apyrase (c) Schematic cartoon of neuronal activity-independent astrocytic Ca2+ oscillations...

Ngày tải lên: 16/02/2014, 09:20

... synchronous Ca2+ oscillations are essential for neuroepithelial cell proliferation, for ventricular cell proliferation, and for cell cycle progression [8–17] Thus, the synchronous Ca2+ oscillations ... cell–cell adhesion and the synchronous Ca2+ oscillations, and suggest that cadherin–catenin complexes connect interkinetic cells with each other Synchronous Ca2+ oscillations occur in S-phase cells and ... electrical coupling in cortical development Synchronous Ca2+ oscillations occur in the developing cortex even before synapse formation [8,31,32] Ca2+ oscillations in the retinal ventricular zone are driven...

Ngày tải lên: 16/02/2014, 09:20

... Src oscillations may occur when these activities are low (Figs and 3; see also in more detail below) Close to this stable oscillatory pattern, a stepwise increase in stimulus can lead to oscillations, ... Journal compilation ª 2009 FEBS 4107 Switches, pulses and oscillations in Src signaling N P Kaimachnikov and B N Kholodenko Fig Bistability and oscillations in the Src cycle (A) Hysteresis in steady-state ... state; 2, bistability domain, two stable states separated by a saddle; 3, oscillations, a single unstable steady state; 4, oscillations, three unstable steady states; 5, one stable and two unstable...

Ngày tải lên: 18/02/2014, 11:20

... of the oscillations relative to the baseline of the oscillations, a ratio we call the observability, goes through a maximum as a function of system size Results Mechanism of stochastic oscillations ... able to oscillate? The mechanism of these oscillations is identical to that leading to damped oscillations in the deterministic version of this system [21]: oscillations occur when the inhibition ... observability of the oscillations will thus depend critically on the amplitude of the oscillations relative to the time-averaged number of molecules, which forms the baseline for the oscillations The...

Ngày tải lên: 19/02/2014, 07:20

... is supported by findings showing that IP3 oscillations are not required for Ca2+ oscillations [124] However, a coupling between oscillations in IP3 and oscillations in Cacyt seem to be of importance ... dynamics [33,34], heart contraction and fibrillation [35], glycolytic oscillations [36,37] and cAMP oscillations [5] The models of calcium oscillations are based on a description of the essential fluxes ... Ca2+ was necessary for oscillations while others found that it was not [66,67] or that inhibition of the plasma membrane Ca2+ pump does not prevent oscillations [68] If oscillations occur in the...

Ngày tải lên: 24/03/2014, 00:21

... M Jules et al oscillations and are found in yeast growing in acid conditions [79] This group of oscillations also shows robust temperature and nutrient-compensation ... occurrence and sustainability of these autonomous oscillations under our growth conditions Oscillating batch cultures on trehalose Results Autonomous oscillations during batch culture on trehalose ... summary, autonomous oscillations were identied for the rst time during discontinuous, oxidative growth on trehalose, which could be split into two different types of consecutive oscillations Furthermore,...

Ngày tải lên: 30/03/2014, 16:20

... types of oscillations have also been observed, e.g sinusoidal, period-doubled or chaotic oscillations [13,14], but these are rare special cases Therefore, we focus on relaxation-like oscillations ... glycolytic oscillations is weak [27] Another argument in favour of the PFK hypothesis is the fact that yeast extracts fed with the PFK substrate F6P can show oscillations, whereas oscillations ... mathematical models of glycolytic oscillations They conclude that the control of the oscillations is distributed throughout the network [3234] The implication is that the oscillations are a property...

Ngày tải lên: 30/03/2014, 16:20

... Duration (h) Amplitude (%)b 132 ± 4.4 (No or short oscillations) 117 ± 7.8 (No oscillations) (No or short oscillations (

Ngày tải lên: 31/03/2014, 21:21

Ngày tải lên: 24/04/2014, 17:16

... Resonant Oscillations in Multiple-Filled Skutterudites 1979 phonons.3,4 Since the concept of rattling is ... further investigation In this work, we utilized ultrafast spectroscopy to compare the resonant oscillations of single- and triple-filled skutterudites, and the results show that different elements ... -0.78 Delay/ps -0.8 2.5 3.5 4.5 Delay/ps Fig (a) Normalized TTR signal of the Ba-filled sample (b) Oscillations in the TTR signal shown on a magnified scale 1980 Guo, Xu, Salvador, and Meisner misch-metal-filled...

Ngày tải lên: 06/05/2014, 08:54

... Resonant Oscillations in Multiple-Filled Skutterudites 1979 phonons.3,4 Since the concept of rattling is ... further investigation In this work, we utilized ultrafast spectroscopy to compare the resonant oscillations of single- and triple-filled skutterudites, and the results show that different elements ... -0.78 Delay/ps -0.8 2.5 3.5 4.5 Delay/ps Fig (a) Normalized TTR signal of the Ba-filled sample (b) Oscillations in the TTR signal shown on a magnified scale 1980 Guo, Xu, Salvador, and Meisner misch-metal-filled...

Ngày tải lên: 06/05/2014, 08:58

Ngày tải lên: 24/05/2014, 20:00

... line equations 541 VII of FREE OSCILLATIONS 545 *" 58 waves: standing waves, traveling waves, alterTypes nating-current waves of 59 Conditions and types of free oscillations 60 Free oscillation ... capacity: the charge and discharge of a condenser, through an inductive circuit Conditions for oscillations, and the possibility of excessive currents and voltages 13 14 of transient Example ... produced by condenser discharge Their general equations and frequen- 41 Oscillating 42 High frequency oscillations, and their equations The decrement of the oscillating wave The effect of resistance...

Ngày tải lên: 04/06/2014, 12:34

... Serial L-CRP measurements were plotted to rise and fall in a cyclical manner over time These immune oscillations were dynamic in the cancer patients studied, revealing an apparent cycle, with a periodicity ... (Adelaide) CRP Oscillation and Other Diseases Further clinical evidence for homeostatic immune oscillations is found in autoimmunity, especially associated with lymphodepletion or immunotherapy...

Ngày tải lên: 18/06/2014, 15:20

... oscillations The analysis of how TMS might influence circuit-level events, such as network oscillations, constitutes an emerging area of research A vast body of work has shown that cortical oscillations ... on the local network oscillations and the local blood flow Immediately after TMS, the spontaneous local field oscillations show a great increase in the high frequency band (oscillations between ... suggested that gamma oscillations reflect the binding (putting together) of the features of external stimuli [72,74] In the absence of sensory inputs, the most prominent oscillations in the waking...

Ngày tải lên: 19/06/2014, 08:20

... bursting oscillations as exemplified by points and traces C-E in Figure for the fixed b = 0.01 With the increase of gK1 small-amplitude periodic oscillations (Fig 2C) evolve into quasiperiodic oscillations ... self-sustained oscillations, the sensitivity shows a broad small-amplitude peak at the frequency of noise-induced oscillations (Figure 9a, green line) In the parameter region of regular periodic oscillations, ... the hair cell Self-sustained oscillations in hair cells occur on two very different levels First, the mechano-sensory hair bundle itself can undergo spontaneous oscillations and exhibit precursors...

Ngày tải lên: 20/06/2014, 23:20