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| 1 | Modeling of elastic wave propagation on a curved free surface using an improved finite-difference algorithm显示文摘Based on existing direct and imaging methods of a staggered finite-difference scheme, an improved algorithm for staggered finite-difference is proposed to implement rugged topographic free boundary conditions. This method assumes that the free surface can be implemented with horizontal and vertical free surface segments and their corners; the free surface passes through the grid points of shear stress components, instead of the normal stress components. Imaging is carried out for stress components in both horizontal and vertical directions, thus increasing the accuracy. To update particle- velocities, imaging and updating are first performed in the horizontal direction, and then in the vertical direction. The numerical results for elastic flat horizontal free surface with the imaging method and those for flat free surfaces of various slope angles with the proposed method are compared, and are shown to be in good agreement. The advantage of the proposed method is that only the stresses are dealt with in implementing the free surface into the staggered algorithm, which improves computation efficiency. | WANG Xiuming1,3 & ZHANG Hailan2 1. CSIRO Petroleum, ARRC, PO BOX 1130, Technology Park, Bentley, WA 6102, Australia 2. Institute of Acoustics, Chinese Academy of Sciences, Beijing 100080, China 3. Present address: Institute of Acoustics, Chinese Academy of Sciences, Beijing 100080, China | 2004 | Science China(Physics,Mechanics & Astronomy)2004，47，5： | 11 |
| 2 | A severely displaced metaphyseal fracture of the proximal humerus with dislocation of the shoulder in a child显示文摘有在孩子的肩膀的共存的脱臼的近似肱骨 metaphysis 的骨折是稀罕损害。损害经常作为高速度损伤的后果发生。通常在孩子与 epiphysis 联系的近似肱骨的大多数破裂能与关上的减小被对待。我们介绍了支撑了肩膀的这类破裂脱臼的 5 岁的女孩的一个案例。有多重光滑的 K 电线的开的减小和内部固定被执行。在二年后续,病人是疼痛免费、重获的完整的范围打手势。 | JI Jonghun Mohamed Shaft Sang-Eun Park Po Yeon Park | 2014 | Chinese Journal of Traumatology2014，17，1： | 6 |
| 3 | Experimental studies of transgastric gallbladder surgery:cholecystectomy and cholecystogastric anastomosis (videos)显示文摘 | Park Po Bergstrom M Ikeda K | 2005 | Gastrointest Endosc2005，61，4： | 1 |
| 4 | Experimental studies of transgastric gallbladder surgery: cholecystectomy and cholecystogastric anastomosis显示文摘 | Park PO Bergstrom M Ikeda K | 2005 | Gastrointestinal Endoscopy2005，61，： | 1 |
| 5 | Peritoneal and systemic pH during pnemnoperitoneum with CO2 and helium in a pig model显示文摘 | Falk P Park PO | 2008 | Surg Endosc2008，22，2： | 1 |
| 6 | The sequence of development of intestinal tissues injury after strangulation ischemia and reperfusio显示文摘 | Po Park U Haglund GB Bulkley et aI | 1990 | Surgery1990，107，： | 1 |
| 7 | Peritoneal and systemic pH during pneumoperitoneum with CO2 and helium in a pig model显示文摘 | Bergstr(o)m M Falk P Park PO | 2008 | Surg Endosc2008，22，2： | 1 |
| 8 | Experimental studies of transgastric gallbladder:cholecystectomy and cholecystogastric anastomosis显示文摘 | Park PO Bergstrom M Ikeda K | 2005 | Gastrointest Endosc2005，61，： | 1 |
| 9 | Endoscopic full-thickness resection: circumferential cutting method 显示文摘 | Ikeda K Mosse CA Park PO | 2006 | Gastrointest Endosc2006，64，： | 1 |
| 10 | Endoscopic fullthickness resection:circumferential cutting method显示文摘 | Ikeda K Mosse CA Park PO | 2006 | Gastrointest Endosc2006，64，1： | 1 |
| 11 | The sequence of development of intestinal tissue injury after strangulation ischemia and reperfusion显示文摘 | Park PO Haglund U Bulkley GB | | 0，，05： | 1 |
| 12 | Experimental studies of transgastric gallbladder surgery:cholecystectomy and cholecystogastric anastomosis显示文摘 | Park PO Bergstrom M Zkeda K | 2005 | Gastrointest Endosc2005，61，4： | 1 |
| 13 | Peritoneal and systemic pH during pneumoperitoneum with CO2 and helium in a pig model显示文摘 | Bergstrom M Falk P Park PO | 2008 | Surg Endosc2008，22，2： | 1 |
| 14 | Effect of heating conditions of grape seeds on the antioxidant activity of grape seed extracts 显示文摘 | So Young Kim Seok Moon Jeong Woo Po Park | 2006 | Food Chemistry2006，97，3： | 1 |
| 15 | Peritoneal and systemic pH during pneumoperitoneum with CO2 and helium in a pig model 显示文摘 | Bergstrom M Falk P Park PO | 2008 | Surg Endosc2008，22，2： | 1 |
| 16 | Experimental studies of transgastric gallbladder surgery: cholecystectomy and cholecystogastric anastomosis显示文摘 | Park PO Bergstr?mM Ikeda K | 2005 | Gastrointest Endosc2005，61，4： | 1 |
| 17 | Peritoneal and systemic pH during pneumoperitoneum with CO2 and helium in a pig model 显示文摘 | Bergstrom M Falk P Park PO | 2008 | Surg Endosc2008，22，2： | 1 |
| 18 | Peritoneal and systemic pH during pneumoperitoneum with CO2 and helium in a pig model 显示文摘 | Bergatrom M Falk P Park PO | 2008 | Surg Endose2008，22，2： | 1 |
| 19 | Experimental studies of transgastric gallbladder surgery: cholecystectomy and cholecystogastric anastomosis (videos) 显示文摘 | Park PO Bergstrom M Ikeda K | 2005 | Gastrointest Endosc2005，61，4： | 1 |
| 20 | Experimental studies of transgastriegallhladder surgery: cholecystectomy and cholecystogastric anastomosis (videos)显示文摘 | PARK PO BERGSTROM M IKEDA R | 2005 | Gastrointest Endosc2005，61，： | 1 |
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