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World Journal of Clinical Cases 2022年第4期10卷 1349-1356页

作者： Dae hun yun Eun Ha Suk Wan Ju Eun Hyoung Seo Hyun Kang Department of Anesthesiology and Pain Medicine Kwangju Christian HospitalGwangju 61661South Korea

BACKGROUND Rhabdomyolysis develops as a result of skeletal muscle cell collapse from leakage of the intracellular contents into *** severe cases,it can be associated with acute kidney injury and disseminated intravascular coagulation,leading to life threatening *** can occur in the perioperative period from various etiologies but is rarely induced by tourniquet use during orthopedic *** SUMMARY A 77-year-old male underwent right total knee arthroplasty using a tourniquet under spinal *** 24 h after surgery,he was found in a drowsy mental state and manifested features of severe rhabdomyolysis,including fever,hypotension,oliguria,high creatine kinase,myoglobinuria,and disseminated intravascular *** supportive care,cardiac arrest developed abruptly,and the patient was not able to be *** Severe rhabdomyolysis and disseminated intravascular coagulation can develop from surgical tourniquet,requiring prompt,aggressive treatments to save the patient.

关键词： Rhabdomyolysis Total knee arthroplasty Tourniquet Disseminated intravascular coagulation Case report

Analysis of Material Loss Behavior According to Long-Term Experiments on LDIE-FAC Multiple Degradation of Carbon Steel Materials

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World Journal of Nuclear Science and Technology 2022年第1期12卷 1-10页

作者： Kyeong Mo Hwang Dong Jin Lee hun yun Seung Chang Yoo Ji Hyeon Kim SI Business Department KEPCO E&C Gimcheon-si Korea Nuclear Engineering Department UNIST Ulsan-si Korea

Recently, damage caused by liquid droplet impingement erosion (LDIE) in addition to flow-accelerated corrosion (FAC) has frequently occurred in the secondary side steam piping of nuclear power plants, and the damage-occurring frequency is expected to increase as their operating years’ increase. In order to scrutinize its causes, therefore, an experimental study was conducted to understand how the behavior of LDIE-FAC multiple degradation changes when the piping of nuclear power plants is operated for a long time. Experimental results show that more magnetite was formed on the surface of the carbon steel specimen than on the low-alloy steel specimen, and that the rate of magnetite formation and extinction reached equilibrium due to the complex action of liquid droplet impingement erosion and flow-accelerated corrosion after a certain period of time. Furthermore, it was confirmed at the beginning of the experiment that A106 Gr.B specimen has more mass loss than A335 P22 specimen. After a certain period of time, however, the mass loss tends to be the opposite. This is presumed to have resulted from the magnetite formed on the surface playing a role in suppressing liquid droplet impingement erosion. In addition, it was confirmed that the amount of erosion linearly increases under the conditions in which the formation and extinction of magnetite reach equilibrium.

关键词： Liquid Droplet Impingement Erosion (LDIE) Flow-Accelerated Corrosion (FAC) Multiple Degradations ToSPACE Wall Thinning Magnetite

Development of Safety Factors for the UT Data Analysis Method in Plant Piping

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World Journal of Nuclear Science and Technology 2013年第4期3卷 143-149页

作者： hun yun Kyeong-Mo Hwang Chan-Kyoo Lee Power Engineering Research Institute KEPCO E&C Yongin South Korea

There are several thousand piping components in a nuclear power plant. These components are affected by degradation mechanisms such as FAC (Flow-Accelerated Corrosion), cavitation, flashing, and LDI (Liquid Droplet Impingement). Therefore, nuclear power plants implement inspection programs to detect and control damages caused by such mechanisms. UT (Ultrasonic Test), one of the non-destructive tests, is the most commonly used method for inspecting the integrity of piping components. According to the management plan, several hundred components, being composed of as many as 100 to 300 inspection data points, are inspected during every RFO (Re-Fueling Outage). To acquire UT data of components, a large amount of expense is incurred. It is, however, difficult to find a proper method capable of verifying the reliability of UT data prior to the wear rate evaluation. This study describes the review of UT evaluation process and the influence of UT measurement error. It is explored that SAM (Square Average Method), which was suggested as a method for reliability analysis in the previous study, is found to be suitable for the determination whether the measured thickness is acceptable or not. And, safety factors are proposed herein through the statistical analysis taking into account the components’ type.

关键词： Wall Thinning UT (Ultrasonic Test) Reliability Analysis FAC (Flow-Accelerated Corrosion) Safety Factor Measurement Data

Development of New Methodology for Distinguishing Local Pipe Wall Thinning in Nuclear Power Plants

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World Journal of Nuclear Science and Technology 2012年第4期2卷 192-199页

作者： Kyeong Mo Hwang hun yun Chan Kyoo Lee Power Engineering Research Institute Yongin Korea

To manage the wall thinning of carbon steel piping in nuclear power plants, the utility of Korea has performed thickness inspection for some quantity of pipe components during every refueling outage and determined whether repair or replacement after evaluating UT data. Generally used UT thickness data evaluation methods are Band, Blanket, and PTP (Point to Point) methods. Those may not desirable to identify wall thinning on local area caused by erosion. This is because the space between inspecting points of those methods are wide for covering full surface being inspected components. When the evaluation methods are applied to a certain pipe component, unnecessary re-inspection may also be generated even though wall thinning of components does not progress. In those cases, economical loss caused by repeated inspection and problems of maintaining the pipe integrity followed by decreasing the number of newly inspected components may be generated. EPRI (Electric Power Research Institute in USA) has suggested several statistical methods such as FRIEDMAN test method, ANOVA (Analysis of Variance) method, Monte Carlo method, and TPM (Total Point Method) to distinguish whether multiple inspecting components have been thinned or not. This paper presents the NAM (Near Area of Minimum) method developed by KEPCO-E & C for distinguishing whether multiple inspecting components have been thinned or not. In addition, this paper presents the analysis results for multiple inspecting ones over three times based on the NAM method compared with the other methods suggested by EPRI.

关键词： Pipe Wall Thinning Component Multiple Inspection ANOVA-1 Method TPM (Total Point Method) NAM (Near Area of Minimum) Method

Development of ToSPACE for Pipe Wall Thinning Management in Nuclear Power Plants

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World Journal of Nuclear Science and Technology 2019年第1期9卷 1-15页

作者： Kyeong Mo Hwang hun yun Hyeok Ki Seo Geun Young Lee Kyung Woo Kim Material Engineering Department Gimcheon Korea ByN Company Daejeon Korea

A number of piping components in the secondary system of nuclear power plants are exposed to aging mechanisms such as FAC (Flow-Accelerated Corrosion), cavitation, flashing, SPE (Solid Particle Erosion), LDIE (Liquid Droplet Impingement Erosion), etc. Those mechanisms may lead to thinning, leak, or rupture of the components. Due to the pipe ruptures caused by wall thinning in Surry unit 2 of USA in 1986 and in Mihama unit 3 of Japan in 1994, the pipe wall thinning management has emerged as one of the most important issues in nuclear power plants. To manage the pipe wall thinning in the secondary system, Korea has used a foreign program since 1996. As using the foreign country’s program for long term, it was necessary to improve from the perspective of the users. Accordingly, KEPCO-E & C has started to develop the 3D-based pipe wall thinning management program (ToSPACE, Total Solution for Piping And Component Engineering management) from eight years ago, and the development was successful. This paper describes the major functions included in ToSPACE program, such as 3D-based DB (Database) buildup, development of FAC and erosion evaluation theories, UT (Ultra-sonic Test) data reliability analysis, field connection with 3D, automatic establishment of long-term inspection plan, etc. ToSPACE program was developed to allow site engineers performing the selection of inspection quantity at each refueling outage, UT data reliability analysis, UT evaluation, determination of next inspection timing, identification of the inspecting and replacing components in 3D drawings, etc., to access easily.

关键词： ToSPACE Pipe Wall Thinning Flow-Accelerated Corrosion (FAC) Liquid Droplet Impingement Erosion (LDIE) Reliability Analysis 3D Management Long-Term Inspection Plan

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依法治校背景下的高校学生管理

黄冈职业技术学院学报 2007年第1期9卷 50-53页

作者：华芸上海师范大学上海200234

依法治校背景下的高校学生管理,首先意味着管理者要守法,使高校学生管理正当程序化,体现人文关怀和法治原则。文中首先澄清高校管理中的学校与学生的法律关系,找出管理中存在的问题,然后指出应对措施。

关键词：依法治校法律关系高校学生管理

Challenges for clinicians treating autoimmune pancreatitis:Current perspectives

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World Journal of Clinical Cases 2023年第1期11卷 30-46页

作者： Seong-hun Kim yun Chae Lee Hyung Ku Chon Division of Gastroenterology Department of Internal MedicineJeonbuk National University Medical SchoolJeonju 54907South Korea Department of Internal Medicine Institution of Wonkwang Medical ScienceWonkwang University School of Medicine and HospitalIksan 54538South Korea

Autoimmune pancreatitis(AIP)is a rare disease clinically characterized by obstructive jaundice,unintentional weight loss,acute pancreatitis,focal pancreatic mass,and *** is classified into two subtypes-type 1 and type 2-according to pathological findings,clinical features,and serology test results,but some cases may be defined as type not otherwise in the absence of pathological findings and inflammatory bowel *** address the differences in diagnostic criteria by country,standard diagnostic criteria for AIP were proposed in 2011 by an international consensus of expert *** diagnosis of AIP from pancreatic ductal adenocarcinoma is important but remains challenging for ***,all subtypes of AIP show dramatic response to steroid *** review discusses the current perspectives on the diagnosis and management of AIP in clinical practice.

关键词： Autoimmune pancreatitis Pancreatic cancer International consensus diagnostic criteria Steroid

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ABS塑料镀金工艺

三明高等专科学校学报 2004年第4期21卷 72-74页

作者：张运徽王益凡三明学院化生工程系福建三明365004

对ABS塑料镀金工艺进行探讨,对镀金工艺、槽液配方及其维护方法作了介绍,本工艺镀金效果良好,对于提高ABS塑料表面光泽性、装饰性和机械性能有良好的效果。

关键词：镀金工艺效果表面机械性能维护方法 ABS塑料配方光泽性装饰性

非酒精性单纯性脂肪肝变中血脂、尿酸水平检测的临床意义

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中国当代医药 2019年第9期26卷 79-81页

作者：段惠春蒲华云甘肃宝石花医院消化科甘肃兰州730060

目的探讨非酒精性单纯性脂肪肝变中血脂、尿酸水平检测的临床意义。方法选取2016年10月～2018年10月在甘肃宝石花医院就诊的198例门诊及住院的非酒精性单纯性脂肪肝变患者作为实验组,选取同期来我院体健的68例无脂肪肝健康人群作为对照... 详细信息

目的探讨非酒精性单纯性脂肪肝变中血脂、尿酸水平检测的临床意义。方法选取2016年10月～2018年10月在甘肃宝石花医院就诊的198例门诊及住院的非酒精性单纯性脂肪肝变患者作为实验组,选取同期来我院体健的68例无脂肪肝健康人群作为对照组。分析两组的特点,检测其血脂和尿酸浓度。结果实验组的血脂和尿酸指标升高比例高于对照组,差异有统计学意义(P<0.05)。结论血脂和尿酸可能参与非酒精性单纯性脂肪肝变的发病过程,具有重要的临床意义。

关键词：非酒精性单纯性脂肪肝变血脂尿酸临床意义

Classification of hepatobiliary scintigraphy patterns in segmented gallbladder according to anatomical discordance

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World Journal of Clinical Cases 2023年第11期11卷 2423-2434页

作者： yun-Chae Lee Won-Sik Jung Chang-hun Lee Seong-hun Kim Seung-Ok Lee Division of Gastroenterology Department of Internal MedicineJeonbuk National University Medical SchoolJeonju 54907JeonbukSouth Korea Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital Jeonju 54907JeonbukSouth Korea

BACKGROUND Hepatobiliary scintigraphy(HBS)is a useful diagnostic imaging technique that uses radiotracers to evaluate the function of the gallbladder(GB)and biliary *** segmented GB,some HBS images reveal a discordant GB boundary as compared to anatomical *** To evaluate the characteristics of HBS in segmented GB and determine the clinical relevance according to HBS *** A total of 268 patients with chronic cholecystitis,gallstones,or biliary colic symptoms who underwent HBS between 2011 and 2020 were *** GB was defined as segmental luminal narrowing of the GB body on computed tomography(CT)or magnetic resonance(MR)images,and HBS was examined 1 mo before or after CT or *** GB was classified into 3 types based on the filling and emptying patterns of the proximal and distal segments according to the characteristics of HBS images,and GB ejection fraction(GBEF)was identified:Type 1 was defined as a normal filling and emptying pattern;Type 2 was defined as an emptying defect on the distal segment;and Type 3 was defined as a filling defect in the distal *** Segmented GB accounted for 63 cases(23.5%),including 36 patients(57.1%)with Type 1,18 patients(28.6%)with Type 2,and 9 patients(14.3%)with Type 3 emptying ***,approximately 43%of HBS images showed a discordant pattern as compared to anatomical imaging of segmented *** there were no significant differences in clinical symptoms,rate of cholecystectomy,or pathological findings based on the type,most gallstones occurred in the distal *** GBEF was 62.50%±24.79%for Type 1,75.89%±17.21%for Type 2,and 88.56%±7.20%for Type *** 1 showed no difference in reported GBEF compared to the non-segmented GB group(62.50%±24.79%vs 67.40%±21.78%).In contrast,the reported GBEF was higher in Types 2 and 3 with defective emptying and filling when compared to Type 1(80.11%±15.70%vs 62.57%±24.79%;P=0.001).CONCLUSION In segmented GB,discordance i

关键词： Gallbladder Segmented Gallbladder emptying Radionuclide imaging Misdiagnosis Cholecystitis