350 Effect of Low Dose Aspirin (ASA) During Pregnancy on Doppler Waveform Across the Maternal Left Ventricular Outflow Tract (LVOT) and Aorta (Ao)doi:10.1016/S0002-9378(12)91515-XNoneAmerican Journal of Obstetrics & Gynecology
Excellent range resolution and high resistance to electronic countermeasures (ECM) can be achieved by long wideband modulated pulses, which spread out the transmitted energy in frequency and time. By using random noise as the waveform, the range ambiguity can be suppressed as well. In this paper,...
Field testing in a continuous-wave Doppler radar Thus far, we have demonstrated microwave and millimeter-wave generation up to 104 GHz via optical heterodyning, and directly characterized the low-noise performance of our source in the microwave W band through laboratory measurements. Next, we expe...
An a.c. E-field of 10 V p-p at various frequencies was applied across the surface of the sample via two silver electrodes situated at two opposite corners using an Agilent 33220a waveform generator. The laser beam from the Laser Doppler Vibrometer (LDV) was directed to the surface of ...
For a single-carrier system, the I and Q digital waveform needs to pass through a pulse-shaping filter before the DAC in order to shape the transmitted signal within a limited bandwidth. An FIR filter can be used for pulse shaping, and the filter response is illustrate...
(PIN VCMx) Input Resistance4 Output CM Offset Voltage Voltage Range AD8331/AD8332/AD8334 Test Conditions/Comments Min Typ 4.5 Max Unit1 V p-p Differential, VGAIN = 0.5 V Common mode Differential, 0.05 V ≤ VGAIN ≤ 1.0 V Common mode VGAIN = 0.5 V, VOUT = 1 V p-p, HI gain ...
Waveform control strategy in double wirepulsed metal inert-gas welding based on DSP; 基于DSP的双丝脉冲MIG焊波控策略的研究 3. Pulse-anodization Treatment and Evaluation of Corrosion Resistance for AZ91D Magnesium Alloy; AZ91D镁合金脉冲阳极氧化处理及腐蚀性能评价 ...
A recently developed solution to enhance the electrical properties and temperature resistance of the composites utilizes a combination of thefiller materialwith carefully selectedparticle size distributionand a water-soluble ceramic binder Li2MoO4(LMO). This approach enables a filler-matrix ratio of 84:...
(FPGA), which generates the transmit beamformers and corresponding waveform patterns according to the configuration and control parameters of the system. The transmit circuits’ driver and the high voltage circuit then generate a high voltage signal to excite the ultraso...
The resulting power p(t) (normalized to the resistance) is indicated by the time-varying signal shown in Fig. 5c. The value of the averaging time ΔT is chosen to be higher than the period of the lower-frequency component to be identified, in this case 0.3 GHz (period: ≈3.33 ...