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Contrast enhancement of medical ultrasound imaging with reversal phase-inversion pulse technologyLI Qin(李琴), TAN Guan-zheng(谭冠政), A. S. M. Libda(School of Information Science and Engineering, Central South University, Changsha 410083, China)Abstract:A new ultrasound contrast imaging technique was proposed for eliminating the harmonic components from the emission signal transmitted......
Effects of low-intensity pulsed ultrasound stimulation on porous hydroxyapatite blocks for posterolateral fusion of lumbar spine in rabbits ZHUO Xiang-long(卓祥龙)1, 2, L? Hong-bin(吕红斌)3, 4, XU Da-qi...; accepted 23 April 2010 Abstract: The effects of porous hydroxyapatite blocks (PHABs) and an adjunct low-intensity pulsed ultrasound stimulation (LIPUS) on the fusion rate in a rabbit spinal posterolateral......
Adaptive diagonal loaded minimum variance beamforming applied to medical ultrasound imagingLIU Hao-lin(刘昊霖)1, ZHANG Zhi-hong(张志宏)1, 2, LIU Dong-quan(刘东权)1, 3(1. College of Computer Science, Sichuan... an improvement in contrast ratio and without distorting the edges of cyst.Key words:medical ultrasound imaging; minimum variance beamforming; diagonal loading; delay-and-sum beamforming; contrast; robustness......
铸层显微硬度高,耐磨损性能优良,在CeO2添加量为40 g/L时所制备的纳米复合电铸层的显微硬度最高,磨损率最低. 关键词:CeO2纳米颗粒;纳米复合电铸层;电铸;超声波 中图分类号:TQ 153.4;TH 117.3 文献标识码:A Effects of ultrasound on microstructures.... The effects of ultrasound on the microhardness and wear resistance of the nanocomposite electroforming deposits were also evaluated. The results show that because of the introduction of ultrasound......
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; ultrasound  ... method for the preparation of ultrafine metal powders [10-11]. However, the utilization of ultrasound is mainly limited to offer an ultrasonic field for the electrodepositon environment via putting......
Absorption of sulfur dioxide using membrane and enhancement of desorption with ultrasound XUE Juan-qin(薛娟琴), LI Jing-xian(李京仙), LU Xi(卢 曦), MAO Wei-bo(毛维博), WANG Yu-jie(王玉洁), WU Ming (吴 明.... It is concluded that lower ultrasonic frequency results in a better degassing efficiency. The using of ultrasound in desorbing sulfur dioxide from citrate solution improves the desorbing efficiency......
fabricated with exothermic reaction process under high-intensity ultrasound produced by the magnetostrictive transducer were investigated. In this method, the microstructure and grain refining performance... observations show a decreasing trend in the grain size of the composites due to the ultrasound and the content of TiB2 particles in the composites. Compared with the process without ultrasound, the morphology......
Ultrasound enhanced friction stir welding of aluminum and steel:Process and properties of EN AW 6061/DC04-JointsMarco Thom?1,Guntram Wagner1,Benjamin Stra?2,Bernd Wolter21. Chair of Composites... was conducted by ultrasound enhanced friction stir welding(USE-FSW). The power ultrasound was introduced into one of the metal sheets by an ultrasonic roll seam module synchronously to the FSW......