Analyzing data observed by STEPHI in 1997 and by us using 85cm'telescope of XingLong from 2001 to 2002, we obtained amplitude spectra of V647 Tau, SAO73233, SAO54473, V650 Tau, V461 Phe and calculated their physical parameters to study their pulsation peculiarity.
This paper studies the instantanious delivery, delivery fluctuating rate and fluctuation frequency of the Z=5 and 6 sector-slider pump, establishes relevant mathematical model, and provides theoretical basis for the design and calculation of the 5, 6 sector-slider pump.
Blood pulse flow, pulsatility index and standard deviation of blood flow were elevated from 317±48ml/min, 2.85±0.21 and 96±21 ml/min to 447±88 ml/min, 4.56±0.90 and 131±39 ml/min before and during EECP (P<0.05).
The result of the test indicated that the pressure pulse conditions should be from low pressure 0. 05 mPa 10 mm to high pressure 0. 2 mPa 30 min, the best fermentation conditions should be water content 58%, pH 8. 5 and temperature culture 28℃.
The pulsating indexes of cerebral middle,anterior and posterior artery in LCI patients were 1.05±0.26,1.01±0.24,and 1.05±0.23 respectively,higher than 0.87±0.12,0.88±0.20,and 0.88±0.16 respectively in the healthy volunteers(P<0.05).
Results show that the volume and shape of fuel oil pulsating boiler are similar to that of traditional oil-fired boiler,however,the furnace volume,the radiation heating surface,and the convection heating surface has reduced 55%,44.5%,and 13.5% respectively,while the heat transfer efficiency has enhanced more than 30%,the output capacity reaches 0.7 t/h,thermal efficiency to be 86%,heightening 2%,and the noise level<70 dB.
Operating characteristics of solid-state fermentation bioreactor with air pressure pulsation
The paper deals with the development of a novel SSF bioreactor with air pressure pulsation.
By developing a measurement and control system under the Virtual Instrument (VI) concept, the performance of the SSF bioreactor with pressure pulsation was studied by cultivating Trichoderma koningii in solid medium made of wheat bran and corncob.
The cooling effects of pressure pulsation on solid porous beds are discussed.
Experimental results show that pressure pulsation enhances medium moisture evaporation, and hence, heat dissipation.
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.