نتایج جستجو برای: tube sinking
تعداد نتایج: 98938 فیلتر نتایج به سال:
At first glance, shot profile migration and source-receiver (survey-sinking) migration seem to be substantially different algorithms. The basic principles used by the two schemes are different. Shot profile migration is performed by independently propagating the source wavefield and the receiver wavefield. The image is obtained by cross-correlating (possibly normalized by the amplitude of the s...
The movement parameters of yellow fin tuna schools were analyzed by means of scanning sonar in tuna purse seine capture situations in the Oman Sea in June 2010. There was significant difference in swimming speed and radial swimming direction between the escaped and captured schools. In escaped cases, the fish schools swam faster with mostly horizontal avoidance behavior to the sound stimuli fro...
The sinking of an intruder sphere into a powder bed in the apparently fixed bed regime exhibits complex behavior in the sinking rate and the final depth when the sphere density is close to the powder bed density. Evidence is adduced that the intruder sphere locally fluidizes the apparently fixed powder bed, allowing the formation of voids and percolation bubbles that facilitates spheres to sink...
The oceanic biological pump drives sequestration of carbon dioxide in the deep sea via sinking particles. Rapid biological consumption and remineralization of carbon in the "twilight zone" (depths between the euphotic zone and 1000 meters) reduce the efficiency of sequestration. By using neutrally buoyant sediment traps to sample this chronically understudied realm, we measured a transfer effic...
relieved, as by sinking a vacant shaft down to it, a violent explosion would follow. The author concluded from Laplace's law of density that the planet Venus has a rigidity equal to that of a corresponding globe of glass, and that the nuclei of all large bodies are effectively of the highest rigidity. The development of pressure as we decend in the globe was shown to be such as to invalidate th...
Consider that the hottest part of the coil is at the geometric center (A) where the heat sinking to surrounding surfaces or media is minimized and the heat sourcing contribution of surrounding conductors is maximized. The COR method will provide the average temperature of the entire conductor that forms the coil. The thermocouple, applied necessarily to the surface of the coil (B), where the he...
An improved charge pump (CP) for phase locked loop (PLL) applications is presented. The proposed charge pump circuitry employs a variable current source in its sink path, which realizes feedback network for calibration. This scheme of charge pump minimizes mismatch between the sourcing current and the sinking current efficiently. The circuit is simulated in 0.18um CMOS technology and the simula...
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