Based on the research into the damping properties of SiCp/Al composites by internal friction and ultrasonic attenuation method, the relationships between ultrasonic absorbing attenuation coefficients and scattering attenuation coefficients are analyzed.
(2) SFO pressor responses were markedly attenuated by preinjection of [Sar 1,Thr 8] AⅡ (ST AⅡ , an AⅡ antagonist) into bilateral NPV or RVLM, while NPV pressor responses were suppressed by ST AⅡ injection into the RVLM;
The limiting oxygen index of the fabric was 26.9%,the ultraviolet absorbancy be- low 1.6,the volume resistivity 8.13×10~(13)Ω·cm,the triboelectrification voltage 7 272 V,and the attenuated voltage in 1 min 5 519 V.
The maximum value of J - integral was in the deepest point of surface cracks, the J - integral value gradually attenuated close to free surface and its change rule along crack's border had a direct bearing on the "shape ratio"2C/a, the J - integral value tend to flat along with decrease of "shape ratio"2C/a.
Also we point out that such reconstruction algorithm procedures can be used to deal with the SPECT projection data with constant attenuation.
An issue of synthesis of linear regulators is considered, which involves a control problem with a generalized H∞-criterion that makes it possible to smooth out values of the maximum coefficient of attenuation of the vibrational energy.
The method for computing signal attenuation in wireless data transmission systems taking the relief and antenna parameters into
A method, realizable in the form of a program on the personal computer, for computing signal attenuation in the radio link taking the relief of the underlying surface and characteristics of the antenna assembly into account is proposed.
Examples of computing signal attenuation in different conditions are represented.
A dynamic signal is introduced and adaptive nonlinear damping terms are used to restrain the effects of unmodeled dynamics, nonlinear uncertainties and unknown bounded disturbances.
Nonlinear optimal predictive controller for static var compensator to improve power system damping and to maintain voltage
The main objectives of this paper are to simultaneously improve power system damping and to maintain voltage at the static var compensator (SVC) location bus simultaneously.
The ideas of adaptive nonlinear damping and changing supply functions were used to counteract the effects of parameter and nonlinear uncertainties, unmodeled dynamics and unknown bounded disturbances.
The results, based on the dynamic properties calculation of a typical mechanical spiral seal, such as stiffness coefficients and damping coefficients, exert the influence of the mechanical seal on the rotor-bearing system of the high-speed machinery.
Immure response induced by oral DNA vaccination against FMDV delivered by attenuated Salm onella choleraesuis C500
In group B, the histopathologic damage was attenuated to a certain extent in comparison to that in group A.
Oxytocin further attenuated GI-RI after vagotomy and sympathectomy (GMDI 6.83 ± 8.89, 29.67 ± 5.54, n = 6), compared with the GI-R group and the oxytocin group (P >amp;lt; 0.01).
The surface composition of the blend films was determined by Fourier transform infra-red spectroscopy coupled with a variable incidence angle attenuated total reflection accessory (ATR-FTIR).
The results of attenuated total reflectance FTIR spectroscopy (ATR-FTIR) showed that PP-g-PEG could diffuse preferably onto the surface of the blends and be suitable as an effectual macromolecular surface modifier for PP.