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Influence of Housing and Urban Development on Debris Flow Flooding and Deposition

Journal of Mountain Science 2013年第2期10卷 273-280页

作者： Kana NAKATANI yuki okuyama Yuji HASEGAWA Yoshifumi SATOFUKA Takahisa MIZUYAMA Graduate School of Agriculture Kyoto UniversityKitashirakawa Oiwake-choSakyo-kuKyoto City606-8502Japan National Institute for Land and Infrastructure Management AsahiTsukuba CityIbaraki305-0804Japan Civil Engineering Research Laboratory 904-1 TohigashiTsukuba CityIbaraki300-2633Japan Department of Civil Engineering Ritsumeikan University1-1-1 Noji-higashiKusatsu CityShiga525-8577Japan

Debris flows form deposits when they reach an alluvial fan until they eventually ***,houses located in the alluvial fan might affect the debris flow flooding and deposition *** previous studies have considered the effects of houses on debris flow flooding and *** study conducted model experiments and numerical simulations using the Kanako2D debris flow simulator to determine the influence of houses on debris flow flooding and *** model experiments showed that when houses are present,the debris flow spreads widely in the cross direction immediately upstream of the houses,especially when the flow discharge is large or the grain size is *** located in the alluvial fan also influence the deposition *** presence of houses led to flooding and deposition damage in some places and reduced the damage in *** simulation also demonstrated the influence of *** the model experiment and the simulation showed that houses change the flooding and deposition areas.

关键词： Debris flow Alluvial fan House Modelexperiment Numerical simulation

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Late-onset severe biliary bleeding after endoscopic pigtail plastic stent insertion

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World Journal of Gastroenterology 2017年第4期23卷 735-739页

作者： Muneji Yasuda Hideki Sato yuki Koyama Tomoki Sakakida Takumi Kawakami Takeshi Nishimura Hideki Fujii Yoshikazu Nakatsugawa Shinya Yamada Naoya Tomatsuri Yusuke okuyama Hiroyuki Kimura Takaaki Ito Hiroyuki Morishita Norimasa Yoshida Department of Gastroenterology and Hepatology Japanese Red Cross Kyoto Daiichi Hospital Department of Radiology Japanese Red Cross Kyoto Daiichi Hospital

Here, we report our experience with a case of severe biliary bleeding due to a hepatic arterial pseudoaneurysm that had developed 1 year after endoscopic biliary plastic stent insertion. The patient, a 78-year-old woman, presented with hematemesis and obstructive jaundice. Ruptured hepatic arterial pseudoaneurysm was diagnosed, which was suspected to have been caused by long-term placement of an endoscopic retrograde biliary drainage(ERBD) stent. This episode of biliary bleeding was successfully treated by transarterial embolization(TAE). Pseudoaneurysm leading to hemobilia is a rare but potentially fatal complication in patients with long-term placement of ERBD. TAE is a minimally invasive procedure that offers effective treatment for biliary bleeding.

关键词： Biliary stent Plastic stent Biliary bleeding Pseudoaneurysm Pigtail stent

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