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| 1 | New 14-mm diameter Niti-S biliary uncovered metal stent for unresectable distal biliary malignant obstruction显示文摘AIM To investigate whether an uncovered self-expandable metal stent(UCSEMS) with a large diameter could prevent recurrent biliary obstruction(RBO).METHODS Thirty-eight patients with malignant biliary obstruction underwent treatment with an UCSEMS with a 14-mm diameter(Niti-S 14). Retrospectively, we evaluated technical and functional success rate, RBO rate, time to RBO, survival time, and adverse events in these patients.RESULTS Stent placement success and functional success were achieved in all patients. Two patients(5.3%) had RBO due to tumor ingrowth or overgrowth. The median time to RBO was 190(range, 164-215) d. The median survival time was 120(range, 18-502) d. The 6-mo non-RBO rate was 91%. Other adverse events other than RBO occurred as follows: Acute cholecystitis, post-ERCP pancreatitis, hemobilia, and fever without exacerbation of liver injury, and liver abscess in 4(10.3%), 3(7.9%), 2(5.3%), 1(2.6%), and 1(2.6%), respectively. Migration of the stents was not observed.CONCLUSION Niti-S 14 is considered to be a preferable metal stent because of a low rate of RBO with no migration. | Masataka Kikuyama Naofumi Shirane Shinya Kawaguchi Shuzou Terada Tsuyoshi Mukai Ken Sugimoto | 2018 | World Journal of Gastrointestinal Endoscopy2018，10，1： | 5 |
| 2 | Delayed neurotoxicity produced by an organophosphorous compound (Sumithion)显示文摘 | Toshihisa Sakamoto Yusuke Sawada Kazuyuki Nishide Daikai Sadamitsu Toshiharu Yoshioka Tsuyoshi Sugimoto Satoshi Nishii Hiroe Kishi | 1984 | Archives of Toxicology1984，，2： | 1 |
| 3 | Predictors of Malignant Intraductal Papillary Mucinous Neoplasm of the Pancreas显示文摘 | Takuya Mimura Atsuhiro Masuda Ippei Matsumoto Hideyuki Shiomi Shiei Yoshida Maki Sugimoto Tsuyoshi Sanuki Masaru Yoshida Tsuyoshi Fujita Hiromu Kutsumi Yonsou Ku Takeshi Azuma | 2010 | Journal of Clinical Gastroenterology2010，，9： | 1 |
| 4 | Evaluation of Important Factors Affecting Quench Distortion of Carburized Hypoid Gear with Shaft by Using Computer Simulation Methods显示文摘To minimize quenching distortion and dispersion, carburizing and quenching process conditions must be optimized; this includes the parts racking design used for quenching. We investigated some factors affecting carburized quenching distortion with an experiment using a hypoid gear having a shaft and with numerical simulation methods. The experimental results and those obtained from simulation were generally in agreement. Focusing on the surface temperature distribution in the gear, we studied quenching distortion characteristics in terms of changes in tooth profile and helix deviation. In our experiments, distortions occur during quenching in 373 K oil after austenitized temperature treatments conducted with various attitudes. We calculated the distortions by simulating the carburized oil-quenching process for the hypoid gear. Our results show large differences between the cooling rates of the tooth toe, middle section, and heel edges, and these greatly influence the change in tooth profile and helix deviation. We found that reducing the differences in temperatures on the gear surfaces during quenching is most important for minimizing the quench distortion of the hypoid gear. | Tsuyoshi Sugimoto Youichi Watanabe | 2004 | 材料热处理学报2004，25，5： | 0 |
| 5 | Visualization of Vapor Film Collapse Behavior with Complexity on Quenching Process by Cellular Automaton显示文摘The vapor film collapse that occurs in the quenching process is complicated and affects the heat treatment quality and its distortion.In order to incorporate it into the MBD(Model Based Development)technology required these days,it is necessary to predict the quality of heat treatment by CAE(Computer Added Engineering),shorten the product development period.The calculation of the vapor film collapses in a simple and practical time in order to improve the product performance.However,in the past,in order to formulate the vapor film collapse on a simulation,it was necessary to perform a very large amount of computational calculation CFD(computational fluid dynamics),which was a problem in terms of computer resources and the model of vapor film collapse.In addition,this phenomenon has a complexity behavior of the phenomenon in iterative processing,which also complicates the calculation.In this study,the vapor film collapse phenomenon is easily visualized using self-organized cellular automaton simulation which includes the phenomena of“vapor film thickness and its fluctuation”,“flow disturbance”,“surface step of workpiece”,and“decrease of cooling due to r shape of surface”.The average cooling state and repeated fluctuations of the cooling state were reproduced by this method. | Tsuyoshi Sugimoto | 2023 | Journal of Mechanics Engineering and Automation2023，13，1： | 0 |
| 6 | Heat Treatment Simulation for Low Pressure Hyper Carburizing Process显示文摘Carburizing heat treatment is well used to increase the strength of gears and automobile drivetrain parts.When very high contact fatigue strength is required,hyper carburizing or carbonitriding is well used to improve the surface hardness and tempering softening resistance.Over saturate carburizing as called hyper carburizing can be used in a conventional ordinary carburizing furnace and investment of new gas supply equipment is unnecessary,while there are problems such as controlling precipitation of cementite and securing hardenability of the surface,etc.Also,problems such as secondary precipitation to control the material micro structure,its quality prediction method becomes important.In recent years the low pressure carburizing method has been widely used and the possibility of making hyper carburizing in low cost has been expanding.However,when hyper carburizing is performed by low pressure carburizng,reticulated cementite occurs at the edge of the part,there is a problem such as local increase of carbon concentration distribution and toughness.In this study,we tried to formulate precipitation when super carburizing was performed on steel parts using a low pressure carburizing furnace,formulated the surface hardness distribution,and tried to calculate the hardness and cementite precipitation size distribution.CALPHAD method is used to obtain the physical property values,graphite of an intermediate product was precipitated from the low pressure carburizing atmosphere on the surface layer,and it was assumed that carburization occurred therefrom.Estimating supersaturated carbon precipitates as cementite,the growth amount of the precipitate is calculated.The deposition rate was estimated by comparing the actual measurement with the calculated value.Estimating hardness is determined by the sum of the hardness of the precipitate and the hardness of the parent phase part,the hardness distribution was verified.As a result,the hardness distribution at the time of high concentration carburization in the test piece shape was predicted.The method was also applied to the actual part shape,and the quality difference between the edge part and the flat part of the gear and the heat treatment deformation quantity were estimated. | Tsuyoshi Sugimoto Dong-Ying Ju | 2019 | Journal of Mechanics Engineering and Automation2019，9，1： | 0 |
| 7 | 用计算机模拟法对渗碳的准双曲面主动锥齿轮淬火变形的关键因素的评定显示文摘为使淬火变形和偏差减至最小.渗碳和淬火工艺必须最佳化。这当中已包括零部件用于淬火的挂装设计。作者以准双曲面主动齿轮为例,用数字模拟方法对一些影响渗碳淬火变形的因素进行了研究和试验。试验结果与模拟方法获得的结果是一致的。重点是对齿轮表面温度分布的研讨,作者根据齿形的变化和螺旋线偏差研究了淬火变形特性。在试验中,以各种状态的处理温度奥氏体化后,在100℃的油中淬火时均出现变形。作者用准双曲面齿轮通过模拟渗碳油淬过程来预测变形。结果表明,在齿顶、齿中部和齿根边缘的冷却率间差异很大,而这些又很大程度上影响着齿形和螺旋线偏差的变化。作者发现在淬火期闻,降低齿轮表面的温差.对于降低准双曲面齿轮的淬火变形是极为重要的。 | Tsuyoshi Sugimoto Youichi Watanabe 翁远松(译) 赵世鑫(校) | 2006 | 綦齿传动2006，，2： | 0 |
| 8 | New acetogenin katsuurallene from Laurencia saitoi collected from Katsuura, Japan显示文摘We examined the chemical constitution of the red alga Laurencia saitoi Perestenko,collected from Katsuura,Boso Peninsula,Chiba Prefecture,Japan.This specimen produced a new polyhalogenated acetogenin,named katsuural-lene(1),which structure was determined by the spectral methods,along with known diterpene,deoxyparguerol(2)and triterpene,thyrsiferol(3).In this paper we describe the structural elucidation of katsuurallene together with some biological activities. | Yu Minamida Hiroshi Matsuura Takahiro Ishii Miyu Miyagi Yuto Shinjo Kosuke Sato Takashi Kamada Yoshihiro Mihara Iwao Togashi Keisuke Sugimoto Tsuyoshi Abe Norio Kikuchi Minoru Suzuki | 2022 | Natural Products and Bioprospecting2022，12，1： | 0 |
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