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Neoadjuvant chemoradiotherapy followed by D2 gastrectomy in locally advanced gastric cancer

World Journal of Gastroenterology 2015年第9期21卷 2711-2718页

作者： Mi Sun kim Joon Seok Lim Woo Jin hyung Yong Chan Lee Sun Young Rha ki Chang Keum Woong Sub Koom Department of Radiation Oncology Yonsei University College of MedicineSeoul 120-752South Korea Department of Radiology Yonsei University College of MedicineSeoul 120-752South Korea Department of Surgery Yonsei University College of MedicineSeoul 120-752South Korea Department of Internal Medicine Yonsei University College of MedicineSeoul 120-752South Korea Department of Medical Oncology Yonsei University College of MedicineSeoul 120-752South Korea

AIM:To investigate the efficacy of neoadjuvant chemoradiotherapy(NACRT) for resectability of locally advanced gastric cancer(LAGC).METHODS:Between November 2007 and January 2014,29 patients with LAGC(clinically T3 with distal esophagus invasion/T4 or bulky regional node metastasis) that were treated with NACRT followed by D2 gastrectomy were included in this *** was evaluated with radiologic and endoscopic exams before and after *** threedimensional conformal radiotherapy,patients received 45 Gy,with a daily dose of 1.8 *** entire tumor extent and the regional metastatic lymph nodes were included in the gross tumor *** presenting with a resectable tumor after NACRT received a total or subtotal gastrectomy with D2 *** pathologic tumor response was evaluated using Japanese Gastric Cancer Association histologic evaluation *** morbidity was evaluated using the National Cancer Institute-Common Terminology Criteria for Adverse Events version *** survival(OS) and progression-free survival(PFS) rates were estimated using a Kaplan-Meier analysis and compared using the log-rank ***:All patients were assessed as unresectable ***-four patients(24/29; 82.8%) showed LAGC on positron emission tomography-computed tomography(CT) and contrast-enhanced CT,whereas four patients(4/29; 13.8%) with vague invasion orabutment to an adjacent organ underwent diagnostic *** patient(1/29; 3.4%),initially assessed as a resectable case,underwent an "open and closure" after the tumor was found to be *** to an adjacent organ(34.5%) was the most common reason for *** clinical response rate one month after NACRT was 44.8%.After NACRT,69%(20/29) of patients had a resectable *** the 20 patients with a resectable tumor,18 patients(62.1%) underwent a D2 *** R0 resection rate was 94.4% and two patients(2/18; 11.1%) showed a complete *** median follow-

关键词： Advanced gastric cancer D2 gastrectomy Neoadjuvant

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Sphincterotomy by triple lumen needle knife using guide wire in patients with Billroth Ⅱ gastrectomy

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World Journal of Gastroenterology 2013年第48期19卷 9405-9409页

作者： Su Bum Park hyung Wook kim Dae Hwan Kang Cheol Woong Choi ki Tae Yoon Mong Cho Byeong Jun Song Department of Internal Medicine Pusan National University School of Medicine Research Institute for Convergence of Biomedical Science and Technology Pusan National University Yangsan Hospital Yangsan-si Gyeongsangnam-do 626-770South Korea

AIM:To investigate the usefulness of a guide wire and triple lumen needle knife for removing stones in BillrothⅡ(B-Ⅱ)gastrectomy ***:Endoscopic sphincterotomy in patients with B-Ⅱgastrectomy is *** used a new guide wire technique involving sphincterotomy by triple lumen needle knife through a forward-viewing *** technique was performed in nine patients between August 2010 and June *** as described above was *** sphincterotomy,successful stone removal,and complications were investigated ***:Sphincterotomy by triple lumen needle knife using guide wire was successful in all nine *** started towards the 4-5 o’clock direction and continued to the upper margin of the papillary *** stone removal in one session was achieved in all *** were no procedure related complications,such as bleeding,pancreatitis,or ***:In patients with B-Ⅱgastrectomy,guide wire using sphincterotomy by triple lumen needle knife through a forward-viewing endoscopy seems to be an effective and safe procedure for the removal of common bile duct stones.

关键词： Billroth Ⅱ gastrectomy Endoscopic sphincterotomy Forward-viewing endoscopy Guide wire Triple lumen needle knife

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In?uence of Carbon Equivalent Value on the Weld Bead Bending Properties of High-Strength Low-Alloy Steel Plates

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Journal of Materials Science & Technology 2017年第4期33卷 321-329页

作者： ki Hyuk kim In Jun Moon ki Won kim ki Bong Kang Byung Gyu Park Kwang Seok Lee R&D Center of Dongkuk Steel Mill Co. Ltd Pohang 790-729 South Korea Korea Institute of Materials Science Implementation Research Division Materials Deformation Department 797 Changwondaero Changwon Gyeongnarn642-831 South Korea

The contribution of chemical compositions in terms of carbon equivalent value（CEV） on impending crack propagation during weld bead bend tests（WBBTs） was studied with five different high-strength lowalloy steel plates that underwent different rolling processes. The test showed that cracks developed at the weld joint, easily passed through the coarse-grain heat-affected zone（CGHAZ）, and finally were arrested within the heat-affected zone（HAZ）. An apparent decrease in the average crack length, which consequently indicated improvement in crack arrestability, was found with decreasing CEV. In addition,the relatively fine microstructure in the HAZ of low-CEV steel plates helped in preventing the crack from further propagation. Special emphasis was placed on the empirical expectation of critical CEV above which WBBT might fail.

关键词： Mechanical characterization Steel Welding Fracture Crack arrestability against bending

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Diagnostic analysis of the asymmetric structure of the simulated landfalling typhoon “Haitang”

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Progress in Natural Science:Materials International 2008年第10期18卷 1249-1260页

作者： ki-Ryong Kang National Institute of Meteorological Research KMASeoulRepublic of Korea

The landfailing processes of Typhoon"Haitang"near Lianjiang of Fujian Province of China from 00 UTC 19 to 12 UTC 20 July 2005 were reproduced by using the nesting non-hydrostatic WRF model and data assimilation technology (LevelⅡDoppler radar data of Changle of Fujian Province are assimilated to the simulation every one hour from 01 to 06 UTC 19 July 2005).The mesoscale structure and evolution of the typhoon before,during,and after its landfall were *** simulation data show that the assimilation exper- iment with the high temporal-and-spatial-resolution radar radial velocity and reflectivity data can produce much better simulation of the typhoon track,intensity evolution and landfalling location than the control experiment without assimilating radar *** using the assimilation experimental data,the mesoscale fine-mesh structure and evolution before and after typhoon landfall were analyzed. Because of the influence of sea-land thermodynamic difference,two asymmetric convective regions were located at ocean and land, *** better understand and investigate the asymmetric-structure characteristics of the landfalling typhoon,several dynamical diagnostic tools,the helicity (H),the moist potential vorticity (MPV),the convective vorticity vector (CVV),the moist vorticity vector (MVV),which are associated with the development of strong convections,are *** analysis illuminates that the distribu- tions of these physical diagnostic parameters are totally asymmetric,and subsequently,the associated convections also show distinct asymmetry.

关键词： Typhoon Landfall Convective vorticity vector Moist vorticity vector

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L_2-L_∞ learning of dynamic neural networks

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Chinese Physics B 2010年第10期19卷 1-6页

作者： Choon ki Ahn Department of Automotive Engineering Seoul National University of Technology 172 Gongneung 2-dong Nowon-gu Seoul 139-743 Korea

This paper proposes an y2-y∞ learning law as a new learning method for dynamic neural networks with external disturbance. Based on linear matrix inequality （LMI） formulation, the y2-y∞ learning law is presented to not only guarantee asymptotical stability of dynamic neural networks but also reduce the effect of external disturbance to an y2-y∞ induced norm constraint. It is shown that the design of the y2-y∞ learning law for such neural networks can be achieved by solving LMIs, which can be easily facilitated by using some standard numerical packages. A numerical example is presented to demonstrate the validity of the proposed learning law.

关键词： y2-y∞ learning law dynamic neural networks linear matrix inequality Lyapunovstability theory

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Chaos Synchronization of Nonlinear Bloch Equations Based on Input-to-State Stable Control

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Communications in Theoretical Physics 2010年第2期53卷 308-312页

作者： Choon ki Ahn Faculty of the Division of Electronics and Control Engineering Wonkwang University

In this paper, we propose a new input-to-state stable （ISS） synchronization method for chaotic behavior in nonlinear Bloch equations with external disturbance. Based on Lyapunov theory and linear matrix inequality （LMI） approach, for the first time, the ISS synchronization controller is presented to not only guarantee the asymptotic synchronization but also achieve the bounded synchronization error for any bounded disturbance. The proposed controller can be obtained by solving a convex optimization problem represented by the LMI. Simulation study is presented to demonstrate the effectiveness of the proposed synchronization scheme.

关键词： chaos synchronization input-to-state stable (ISS) control nonlinear Bloch equations linear matrix inequality (LMI) Lyapunov theory

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阴茎假体植入术治疗勃起功能障碍548例分析

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中华泌尿外科杂志 2000年第12期21卷 755-757页

作者：辛钟成郭应禄 Choi hyung ki 北京大学第一医院，100034 韩国Yonse大学

目的　了解阴茎假体植入术的手术合并症和机械信赖性 ,分析植入各种假体治疗阴茎勃起功能障碍患者的远期效果。　方法　利用随访调查表对 5 48例假体植入术后患者进行随访调查。　结果　 5 48例患者中 ,植入单件套可屈性假体 2 2 8例 (4... 详细信息

目的　了解阴茎假体植入术的手术合并症和机械信赖性 ,分析植入各种假体治疗阴茎勃起功能障碍患者的远期效果。　方法　利用随访调查表对 5 48例假体植入术后患者进行随访调查。　结果　 5 48例患者中 ,植入单件套可屈性假体 2 2 8例 (4 1.6 % ) ,单件套膨胀性假体 45例 (8.2 % ) ,三件套膨胀性假体 2 73例 (5 0 .2 % )。阴茎假体植入术后合并症发生率为 5 .1% (2 8/ 5 48) ,包括非机械性合并症 8例 (1.5 % ) ,机械性合并症 2 0例 (3 .6 % )。AMSMalleable 6 0 0可屈性假体和AMS70 0CXM三件套膨胀性假体的机械性合并症发生率分别为 1.3 % (3/ 2 2 8)和 5 .5 % (15 / 2 73) ,AMS70 0CXM三件套膨胀性假体的圆柱体泄漏 10例 ,占 3 .7% (10 / 2 73)。结论　AMS 70 0CXM三件套膨胀性假体的机械性能和隐蔽性有了显著提高。

关键词：阳萎勃起功能障碍阴茎假体植入术治疗

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Effect of reduction in area per pass on strain distribution and microstructure during caliber rolling in twinning-induced plasticity steel

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Journal of Iron and Steel Research International 2020年第1期27卷 62-74页

作者： Joong-ki Hwang Sung Jin kim School of Mechanical Engineering Tongmyong UniversityBusan 48520Republic of Korea Department of Advanced Materials Engineering Sunchon National UniversitySuncheon 57922Republic of Korea

The effects of reduction in area(RA)per pass during caliber rolling on microstructure and strain distribution of twinninginduced plasticity steel have been investigated to find solutions to make a more homogeneous material along the radial direction for wire rod *** steel wires subjected to an average RA per pass of 2.5%(skin pass caliber rolling)and 10.0%(conventional caliber rolling)were *** skin pass caliber-rolled wire was characterized as a duplex fiber texture of majorand minor.and the textures were almost same at/between center and surface area,which is totally different from those of conventional caliber rolling and wire *** skin pass caliber rolling led to more homogeneous microstructure and mechanical properties along the radial direction in comparison with the conventional caliber rolling and wire drawing due to the more homogeneous Hall-Petch hardening,dislocation hardening,and texture behavior with area,resulting in higher formability.

关键词： Twinning-induced plasticity steel Caliber rolling Deformation twin Reduction in area Skin pass

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A Passivity Based Synchronization for Chaotic Behavior in Nonlinear BlochEquations

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Chinese Physics Letters 2010年第1期27卷 56-59页

作者： Choon ki Ahr Faculty of the Division of Electronic and Control Engineering Wonkwang University 344-2 Shinyong-dong Iksan 570-749 Korea

We propose a new passivity based synchronization scheme for chaotic behavior in nonlinear Bloch equations. Based on the Lyapunov theory and linear matrix inequality （LMI） approach, for the first time, the passivity based controller is presented to guarantee stable synchronization. The proposed controller can be obtained by solving a convex optimization problem represented by an LMI. A numerical example is given to demonstrate the effectiveness of the proposed synchronization scheme.

关键词： Chinese climate network complex systems small world community

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Cutoff characteristics of dielectric-filled circular holes embedded in dispersive plasmonic medium

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Chinese Optics Letters 2009年第10期7卷 904-908页

作者： ki Young kim Department of Physics National Cheng Kung University

The cutoff characteristics of dielectric-filled circular holes embedded in a dispersive plasmonic medium are investigated. Since two distinctive operating modes, surface plasmon polariton and circular waveguide modes, can exist in the slow and fast wave regions, respectively, the cutoff characteristics for each are separately investigated for linear and radial polarizations of the guided fields. As a result, the cutoff wavelengths for the linear and radial polarizations with very small subwavelength hole radii are found to be limited by the plasma resonance wavelength and plasma wavelength, which in turn are dependent and independent, respectively, of the dielectric constant of the dielectric filler material.

关键词： Circular waveguides Polarization Surface plasmon resonance

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