A pulse rise time separation spectra of γ and 252Cf spontaneous neuron upon 1 MeV is obtained, the n-γ separation function reaches to 4.6. When the result of pulse rise time separation coincides with the time - of- flight spectra in which the neutron energy is upon 0.5MeV, 0.8MeV and 1.0MeV, comparing with the anticoincidence,γ was eliminated 99.90% at least.
Specifications of the circuit are as follows: output pulse voltage 50kV, pulse current 30A, pulse width 50ms, risetime and fall time of the voltage less than 25μs, fluctuation of the pulse flattop less than 0.5%, and regulation response time of the pulse voltage less than 30μs.
A sensitive complex absorptive wave of Ca-ARS was obtained by using differential pulse voltammetry when a mercury film glass carbon electrode was immersed in 0.1 mol L-1 KOH and 4.5×10-4 mol L-1 ARS solution.
The reaction mechanism between isoquinoline and ·OH radical in aqueous dilute solutions under different conditions was studied by pulse radiolysis.
The electrochemical behavior of ciprofloxacin (CFX) and its interaction with the natural calf thymus DNA (ctDNA) is studied by using pulse difference voltammetry on a carbon electrode.
Furthermore, it is clear that when carrier signal h(t)=0, closed-loop pulse-width modulation (PWM) DC-DC converters are not well posed, and when some condition is satisfied, the closed-loop PWM DC-DC converters with a P controller are well posed.
In this paper, the authors propose a new space vector pulse width modulation (SVPWM) algorithm based on non-orthogonal coordinates for N-level inverters.
Bifurcation and complexity in a ratio-dependent predator-prey chemostat with pulsed input
In this paper, a three dimensional ratio-dependent chemostat model with periodically pulsed input is considered.
Increasing the impulsive period τ, the system undergoes a series of period-doubling bifurcation leading to chaos, which implies that the dynamical behaviors of the periodically pulsed ratio-dependent predator-prey ecosystem are very complex.
Nanocarbon-poly(methyl methacrylate) sols were prepared by pulsed laser ablation at the interface of target submerged in flowing liquid (PLA-IT/SFL) method, and the corresponding composite films were prepared by solution-casting.
In addition, the power gain under the continues wave condition is 14.2 dB with a power density of 4.1 W/mm, while under the pulsed wave condition, power gain reaches 14.4 dB with power density at 5.2 W/mm.
Finally, it is verified that the proposed SVPWM is actually a pulse-width modulation (PWM) technology based on line voltages.
A control system consisting of an unstable continuous linear part and a pulse-frequency modulator in the feedback circuit is studied.
Studies are made of a pulse system consisting of a nonstationary continuous linear portion and a pulse modulator connected to a feedback circuit.
The effectiveness of analytical results is illustrated with an example on the transition processes in a pulse phase-locked system with proportionally integrating filter and standard phase detector characteristics.
Particular interest is shown in the penetration of a pulse of laser radiation through the atmosphere.