نتایج جستجو برای: wave reflection coefficient rs
تعداد نتایج: 461476 فیلتر نتایج به سال:
To detect delamination in integrated circuit (IC) packages, a millimeter-wave inspection system was developed. An open-ended coaxial line sensor was used as a source and also a receiver of the millimeter-wave signal that was transmitted into and reflected from the packages. The phase of the reflection coefficient was measured for inspection of the delamination. The package was scanned in two pe...
Our proposal provides post-migration techniques for computing angle-domain common-image gathers (CIGs) from seismic images, extended by the subsurface offset, in relation with wave-equation migration methods. In addition to the commonly used decomposition of the scattering-angles, we associate the wave-equation migration with dip-domain image gathers as well. Our methodology suggests a system o...
Nowadays, the application of floating breakwaters in small or recreational harbors has found more popularity. These types of breakwaters are more flexible in terms of design, configuration and especially installation compared with fixed breakwaters. In the current study, the performance of floating breakwater (FBs) under regular waves was studied using the physical modeling method. For the mode...
The presence of significant fibrosis is an indicator for liver disease staging and prognosis. The aim of the study was to determine reproducibility of real-time shear wave elastography using a hepatic biopsy as the reference standard to identify patients with chronic liver disease. Forty patients with chronic liver disease and 12 normal subjects received shear wave elastography performed by ski...
Structure transformation (disorder-bcc-fcc) in charged colloidal dispersions, as a manifestation of the Ostwald's step rule, was confirmed by means of reflection spectrum (RS) measurements in our previous study. By taking advantage of a reflection spectrum containing plenty of information about the crystallization behaviors, time-dependent changes of parameters associated with the crystal struc...
The presence of an S wave, preceded by an r wave in lead V5 (rS pattern) has been interpreted as indicating extreme clockwise rotation of the electrical position of the heart around its vertical axis (Goldberger, 1947, 1949). A deep S wave in V5 occurs in right ventricular hypertrophy (Myers et al., 1948), while an R/S ratio less than unity in V5 (rS pattern) when occurring in conjunction with ...
Accurate characterization of the electromagnetic wave scattering and propagation properties of the terrain surface is essential in optimizing the performance of wireless sensor networks (WSN) deployed for environmental monitoring and geophysical sensing applications. As the WSN nodes are positioned near or at the ground level, the conditions of the ground have a substantial effect on the radio ...
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