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  • Superconducting flux qubit
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  • The plots of 1H signal width for the crystalline region of polyethylene thin film on the surface of on an piezoelectric oscillator plate against oscillation frequency in the range from 1 Hz to 2 MHz (a) and in the expanded range from 1 Hz to 100 kHz (b) at 40 °C. ... The plots of 1H signal width for the non-crystalline region of polyethylene thin film on the surface of on a piezoelectric oscillator plate against oscillation frequency in the range from 1 Hz to 2 MHz (a) in the expanded range from 1 Hz to 100 kHz (b) at 40 °C. ... A diagram of an NMR glass tube with an piezoelectric oscillator plate. The polyethylene thin film was molten and adhered on the surface of piezoelectric oscillator plate. The oscillation of an piezoelectric oscillator plate is generated by AD alternator.
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  • Entanglement dynamics of the N-qubit XY model in thermal and dephasing environments are investigated by solving the Lindblad form of the master equation. Analytical solutions for the two-qubit case and numerical solutions for the multi-qubit case are obtained. For the two-qubit case, our results revealed two main features for entanglement evolution from different initial states. First, the thermal reservoir always induces degradation of the entanglement, and the entanglement may undergo sudden death during certain intervals of the evolution time. Second, the dephasing environment induces damped oscillation of the entanglement for initially separable states and mixed states with relative large values of Δ or J; however, it always induces exponentially decay of the entanglement for the initial Bell states. For the multi-qubit case, our results show that the entanglement decreases monotonically as the time evolves for the initial W state, and behaves as damped oscillation for the initial “one-particle” state. Particularly, for system with large number of qubits, the curves of the concurrence C12 with different N are almost overlapped in dephasing environment.
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  • Nonlinear oscillator... He’s frequency formulation
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    • Tabular Data
  • Oscillation bands form an arithmetic progression on the logarithmic scale. For each band the frequency (Hz) or period ranges are shown together with their commonly used names. ... Brain oscillators... Alpha, gamma and theta oscillations
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    • Tabular Data
  • The frequency response of series photodetector frequency circuit system matched with photodetector APT for detection of dilute Hex fluorescence dye concentrations from 333.3fmol/L to 33.3μmol/L. was the frequency response of no sample, were the frequency responses of dilute fluorescence dye concentrations from 333.3fmol/L to 33.3μmol/L. ... The correlation curve between conductance change and frequency shift of series photodetector frequency circuit system matched with photodetector APT. ... The correlation curve between frequency shift and logarithm of fluorescence dye concentration from 3.3pmol/L to 33.3μmol/L (ΔF is the frequency shift, and LogC is the logarithm of fluorescence dye concentration). ... Series photodetector frequency circuit system... The diagram of series photodetector frequency circuit system matched with PMMA. ... The correlation curve between fluorescence dye concentration and frequency shift of series photodetector frequency circuit system matched with photodetector APT.
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  • (a) The magnetic tips, attached to the end of a nanomechanical resonator of dimensions (l,w,h), are fixed at a distance h above ensemble of NV centers. The distances h between the NV spins and magnetic tips can be adjusted by the field-induced deflection of the cantilever. Therefore, a strong coupling thereby can be created between the electronic spins of the defect center and the motion of the resonators. (b) Level diagram of the driven NV centers in the electronic ground states. Rabi frequencies Ω01 (Ω02) of microwaves are used to drive the spin states.
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  • Dependence of dentate high frequency oscillations on glutamate receptor activity. (A) Effect of 40 μM CNQX on peak frequency and power of peak frequency (n=7 slices). (B) Effect of 20 μM NBQX on peak frequency and power of peak frequency (n=7 slices). (C) Effect of 50 μM AP-5 on peak frequency and power of peak frequency (n=5 slices). (D) Effect of 500 μM MCPG on peak frequency and power of peak frequency (n=5 slices). Data are always shown as mean±standard error in percent of control. ... Dependence of dentate high frequency oscillations on GABAA receptor activity. (A) Effect of bicuculline (10 mM) on peak frequency and power of peak frequency (n=5 slices). Data in bar diagrams are always shown as mean±standard error in percent of control. (B) Effect of 20 μM pentobarbital (pb) on oscillation frequency and power (n=6 slices). ... Effect of carbenoxolone on dentate high frequency oscillations. Effect of 200 μM carbenoxolone (cn) on peak frequency and power of peak frequency (n=6 slices). Data are shown as mean±standard error in percent of control. ... Comparison of parallel recorded high frequency oscillations in the dentate gyrus and area CA3. (A) Scheme of a horizontal hippocampal slice showing locations of recording electrodes and stimulation region. (B) Traces of simultaneously recorded oscillations in the dentate gyrus (DG) and in area CA3. Inset shows the strict coherence at ∼180° phase lag between both regions (CA3 signal re-scaled for better visibility). (C) Example peak frequencies of the oscillations in the DG and in area CA3 from 12 consecutive stimulations in the same slice (intervals of 5 min). (D) Averaged event-crosscorrelogram (events are negative peak amplitudes; n=12 stimulation times) showing the correlation between the oscillations in the DG and area CA3 shown in C. ... Dentate high frequency oscillations induced by tetanic stimulation. (A) Scheme of a horizontal hippocampal slice showing the location of the recording electrode and the stimulation region. (B) Example trace of stimulus-induced oscillation in the dentate gyrus (DG). (C) Power spectrum of the trace in (B). Note the smaller second peak at about twice the leading oscillation frequency. (D) Averaged power spectrum of oscillations from 31 slices. Maximal power was set 1. Secondary high-frequency peaks from individual slices result in the elevation of the spectrum right from the main peak. (E) Time course of instantaneous frequency of the oscillations recorded in the DG (n=31 slices). Bars indicate standard error. ... Oscillation
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  • Frequency spectra of pressure oscillations for cavity L4A90 without hydrogen injection. ... Frequency spectra of pressure oscillations for cavity L7A90. ... Oscillation... History and frequency spectra of flamefront oscillations for cavity L7A90, Pjet=1.2MPa. ... Frequency and intensity of pressure oscillations. ... Average location and rms of flamefront oscillations.
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    • Tabular Data
  • Theory and simulation results of the normalized digital frequency fD as a function of the f0/fS ratio and ρ=0.01. The r and δ values which identify each f0/fS segment are also specified. ... Oscilloscope screen captures of resonator position, input pulses (D6), delayed comparator output (D3) and sample clock (D0), for a PDO topology with m=1 and a ‘not perfect’ frequency fS=46.093kHz (r=2). ... Pulsed digital oscillators, MEMS, Oscillators, Sigma-delta... Oscilloscope screen captures of resonator position, input pulses (D6), delayed comparator output (D3 and D1) and sample clock (D0), for a PDO topology with m=2 and the ‘perfect’ frequency fS=44.052kHz (r=2).
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