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世界胃肠病学杂志：英文版 2012年第22期18卷 2877-2880页

作者： Min Joung Kim byoung kuk jang Woo Jin Chung Jae Seok Hwang Young Hwan Kim Department of Gastroenterology Keimyung University School of Medicine Dongsan Medical Center 194 Dongsan-dong Jung-gu Daegu 700-712 South Korea Department of Diagnostic Radiology Keimyung University School of Medicine Dongsan Medical Center 194 Dongsan-dong Jung-gu Daegu 700-712 South Korea

We report a case of duodenal varix bleeding as a long term complication of balloon occluded retrograde transvenous obliteration (BRTO), which was successfully treated with a transjugular intrahepatic portosystemic shunt (TIPS). A 57-year-old man was admitted to the emergency room suffering from melena. He had under-gone BRTO to treat gastric varix bleeding 5 mo before admission. Endoscopy and a computed tomography (CT) scan showed complete obliteration of the gastric varix, but the nodular varices in the second portion of the duodenum expanded after BRTO, and spurting blood was seen. TIPS was performed for treatment of duodenal variceal bleeding, because attempts at endoscopic varix ligation were unsuccessful. The post-operative course was uneventful and the patient was discharged without complications. A follow up CT scan obtained 21 mo after TIPS revealed a patent TIPS tract and complete obliteration of duodenal varices, but multinodular hepatocellular carcinoma had developed. He died of hepatic failure 28 mo after TIPS.

关键词：静脉曲张十二指肠闭塞出血治疗肝癌破裂分流

Hemorrhagic hemangioma in the liver:A case report

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World Journal of Gastroenterology 2015年第23期21卷 7326-7330页

作者： Jeong Min Kim Woo Jin Chung byoung kuk jang Jae Seok Hwang Yong Hoon Kim Jung Hyeok Kwon Mi Sun Choi Department of Internal Medicine Keimyung University School of Medicine Department of Hepatobiliary Surgery Keimyung University School of Medicine Department of Radiology Keimyung University School of Medicine Department of Pathology Keimyung University School of Medicine

Hemangioma is the most common type of benign tumor that arises in the liver. Although rupture and hemorrhage of hepatic hemangioma are rare complications, they can be the cause of mortality. The authors report a case of hemorrhagic hepatic hemangioma: in a 54-yearold woman who was admitted with epigastric *** had taken oral contraceptives several weeks *** results of a blood examination were normal. An abdominal computed tomography scan revealed a tumor in hepatic segment 4, and a hemorrhage inside the cystic mass was suspected. The mass was removed laparoscopically to confirm the tumor properties and control the hemorrhage. The pathologic findings of the resected mass were consistent with hepatic hemangioma with intratumoral hemorrhage. The patient was discharged 8 d after the surgery, without further complications or complaints, and the patient's condition was found to have improved during follow-up.

关键词： Hemangioma Liver Hemorrhage Tumor Complication

Negative impact of sedation on esophagogastric junction evaluation during esophagogastroduodenoscopy

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World Journal of Gastroenterology 2014年第18期20卷 5527-5532页

作者： Eun Soo Kim Ho Young Lee Yoo Jin Lee Bo Ram Min Jae Hyuk Choi Kyung Sik Park Kwang Bum Cho byoung kuk jang Woo Jin Chung Jae Seok Hwang Division of Gastroenterology and Hepatology Department of Internal MedicineKeimyung University School of MedicineDaegu 700-712South Korea

AIM:To compare the esophagogastric junction(EGJ)areas observed in sedated and non-sedated patients during esophagogastroduodenoscopy(EGD).METHODS:Data were collected prospectively from consecutive patients who underwent EGD for various *** patients were divided into three groups according to the sedation used:propofol,midazolam,and control(no sedation).The EGJ was observed during both insertion and withdrawal of the *** extent of the EGJ territory observed was classified as excellent,good,fair,or *** addition,the time the EGJ was observed was ***:The study included 103 patients(50 males;mean age 58.44±10.3 years).An excellent observation was achieved less often in the propofol and midazolam groups than in the controls(27.3%,28.6%and91.4%,respectively,P<0.001).There was a significant difference in the time at which EGJ was observed among the groups(propofol 20.7±11.7 s vs midazolam 16.3±7.3 s vs control 11.6±5.8 s,P<0.001).Multivariate analysis showed that sedation use was the only independent risk factor for impaired EGJ evaluation(propofol,OR=24.4,P<0.001;midazolam,OR=25.3,P<0.001).Hiccoughing was more frequent in the midazolam group(propofol 9%vs midazolam25.7%vs control 0%,P=0.002),while hypoxia(SaO2<90%)tended to occur more often in the propofol group(propofol 6.1%vs midazolam 0%vs control 0%,P=0.101).CONCLUSION:Sedation during EGD has a negative effect on evaluation of the EGJ.

关键词： Esophagogastric junction Endoscopy Esophagus Propo

Comparison of a novel bedside portable endoscopy device with nasogastric aspiration for identifying upper gastrointestinal bleeding

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World Journal of Gastroenterology 2014年第25期20卷 8221-8228页

作者： Jong Hwan Choi Jae Hyuk Choi Yoo Jin Lee Hyung Ki Lee Wang Yong Choi Eun Soo Kim Kyung Sik Park Kwang Bum Cho byoung kuk jang Woo Jin Chung Jae Seok Hwang Division of Gastroenterology and Hepatology Department of Internal Medicine Keimyung University School of MedicineDaegu 700-712South Korea

AIM: To compare outcomes using the novel portable endoscopy with that of nasogastric(NG) aspiration in patients with gastrointestinal ***: Patients who underwent NG aspiration for the evaluation of upper gastrointestinal(UGI) bleeding were eligible for the study. After NG aspiration, we performed the portable endoscopy to identify bleeding evidence in the UGI tract. Then, all patients underwent conventional esophagogastroduodenoscopy as the gold-standard test. The sensitivity, specificity, and accuracy of the portable endoscopy for confirming UGI bleeding were compared with those of NG ***: In total, 129 patients who had GI bleedingsigns or symptoms were included in the study(age 64.46 ± 13.79, 91 males). The UGI tract(esophagus, stomach, and duodenum) was the most common site of bleeding(81, 62.8%) and the cause of bleeding was not identified in 12 patients(9.3%). Specificity for identifying UGI bleeding was higher with the portable endoscopy than NG aspiration(85.4% vs 68.8%, P = 0.008) while accuracy was comparable. The accuracy of the portable endoscopy was significantly higher than that of NG in the subgroup analysis of patients with esophageal bleeding(88.2% vs 75%, P = 0.004). Food material could be detected more readily by the portable endoscopy than NG tube aspiration(20.9% vs 9.3%, P = 0.014). No serious adverse effect was observed during the portable ***: The portable endoscopy was not superior to NG aspiration for confirming UGI bleeding site. However, this novel portable endoscopy device might provide a benefit over NG aspiration in patients with esophageal bleeding.

关键词： Endoscopy Gastrointestinal bleeding Nasogastric as

Engineered NiCo-LDH nanosheets- and ZnFe_(2)O_(4) nanocubes-decorated carbon nanofiber bonded mats for high-rate asymmetric supercapacitors

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Green Energy & Environment 2022年第6期7卷 1228-1240页

作者： Jae-Gyoung Seong Tae Hoon Ko Danyun Lei Woong-Ki Choi Yun-Su kuk Min-Kang Seo byoung-Suhk Kim Department of Organic Materials&Fiber Engineering Jeonbuk National University567 Baekje-daeroDeokjin-guJeonju-siJeollabuk-do54896Republic of Korea Department of BIN Convergency Technology Jeonbuk National University567 Baekje-daeroDeokjin-guJeonju-siJeollabuk-do54896Republic of Korea Korea Institute of Carbon Convergence Technology Jeonju54852Republic of Korea Department of Environmental Biology and Water Engineering College of Urban ConstructionWuchang Shouyi UniversityWuhan430064China

In this work,we have prepared the hierarchically nanostructured core–shell NiCo layered double hydroxide(NiCo-LDH)nanosheets-and ZnFe_(2)O_(4) nanocubes-decorated polyacrylonitrile(PAN)/pitch-based carbon nanofibers(PPCNs)webs(NiCo-LDH@PPCNs as cathode and ZnFe_(2)O_(4)@PPCNs as anode materials)with the bonded network structure by a facile and scalable hydrothemal ***,the low-cost pitch with lower softening point(~90℃)as co-precursor was utilized to produce the PAN/pitch-based carbon nanofibers(PPCNs)with enhanced electrical *** obtained PPCNs with pitch content of 30%(PP30CNs)electrode material delivered higher specific capacitance(~67 F g^(-1))than that(~48 F g^(-1))of the PAN-based carbon nanofibers(PCNs)at 1 A g^(-1),due to the increased electrical conductivity and lower interfacial charge transfer resistance(RCT)of~0.16 ***,the NiCo-LDH-decorated PP30CNs(NiCoLDH@PP30CNs)as cathode material showed superior specific capacitance of 1162 F g^(-1) at 1.0 A g^(-1) and ultra-high retention rate of 91.56%at 10 A g^(-1).The ZnFe_(2)O_(4)@PP30CNs as anode material also showed higher specific capacitance of 282 F g^(-1) at 1 A g^(-1) and good rate capability with capacitance retention of 56.73%at 10 A g^(-1).The as-fabricated asymmetric NiCo-LDH@PP30CNs//ZnFe_(2)O_(4)@PP30CNs hybrid supercapacitor device delivered a specific capacitance of~98 F g^(-1) at 1 A g^(-1) and excellent capacitance retention of~88%after 5000 charge–discharge cycles.

关键词： Carbon nanofiber Pitch Asymmetric Rate capability Supercapacitor

Risk factors for local recurrence after en bloc endoscopic submucosal dissection for early gastric cancer

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World Journal of Gastrointestinal Endoscopy 2016年第7期8卷 330-337页

作者： Ju Yup Lee Kwang Bum Cho Eun Soo Kim Kyung Sik Park Yoo Jin Lee Yoon Suk Lee byoung kuk jang Woo Jin Chung Jae Seok Hwang Department of Internal Medicine Keimyung University School of Medicine

AIM: To investigate factors related to recurrence following en bloc resection using endoscopic submucosal dissection(ESD) in patients with early gastric cancer(EGC). METHODS: A total of 1121 patients(1215 lesions) who had undergone ESD for gastric neoplasia between April 2003 and May 2010 were retrospectively reviewed. Data from 401 patients(415 lesions) were analyzed, following the exclusion of those who underwent piecemeal resection, with deep resection margin invasion or lateral margin infiltration, and diagnosed with benign lesions. RESULTS: Local recurrence after en bloc ESD was found in 36 cases(8.7%). Unclear resection margins, long procedure times, and narrow safety margins were identified as risk factors for recurrence. Lesions located in the upper third of the stomach showed a higher rate of recurrence than those located in the lower third of the stomach(OR = 2.9, P = 0.03). The probability of no recurrence for up to 24 mo was 79.9% in those with a safety resection margin ≤ 1 mm and 89.5% in those with a margin > 1 mm(log-rank test, P = 0.03). CONCLUSION: Even in cases in which en bloc ESD is performed for EGC, local recurrence still occurs. To reduce local recurrences, more careful assessment will be needed prior to the implementation of ESD in casesin which the tumor is located in the upper third of the stomach. In addition, clear identification of tumor boundaries as well as the securing of sufficient safety resection margins will be important.

关键词： Early gastric cancer Endoscopic mucosal resection Recurrence En bloc resection Endoscopic submucosal dissection

Feasibility of wear reduction for soft nanostructured thin film through enhanced elastic recoverability and contact stress relief

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Friction 2023年第7期11卷 1292-1306页

作者： kuk-Jin SEO Hyun-Joon KIM Dae-Eun KIM Department of Mechanical Engineering Yonsei UniversitySeoul 03722Republic of Korea Department of Precision Mechanical Engineering Kyungpook National UniversitySangju 37224Republic of Korea Department of Advanced Science and Technology Convergence Kyungpook National UniversitySangju 37224Republic of Korea

This work shows that a soft,thin film comprising randomly aligned carbon nanotubes(CNTs)can reduce surface wear more effectively than a homogeneous thin film because of enhanced elastic recoverability and contact stress relief originating from its mesh *** investigate the wear characteristics of the mesh structure compared to those of the homogeneous thin film,multi-walled CNTs(MWCNTs)and diamond-like carbon(DLC)thin films were prepared to conduct nanoscale tribological experiments using the atomic force microscopy(AFM).The MWCNT thin film showed unmeasurably low wear compared with the DLC thin film under a certain range of normal *** demonstrate the wear reduction mechanism of the MWCNT thin film,its indentation and frictional behaviors were *** indentation behavior of the MWCNT thin film revealed repetitive elastic deformation with a wide strain range and a significantly lower elastic modulus than that of the DLC thin *** permanent deformation of the MWCNT thin film was observed through frictional experiments under relatively high normal load *** results are expected to provide insights into the design of highly wear-resistant surfaces using nanostructures.

关键词： carbon nanotube(CNT) thin film wear friction elastic recovery

FATIGUE LIVES FOR INDUCTION HARDENED SHAFTS MATERIALS ACCORDING TO THE ENVIRONMENTAL TEMPERATURES

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Acta Metallurgica Sinica(English Letters) 2005年第5期18卷 585-593页

作者： D.G. Lee K.C. jang J.M. kuk I.S. Kim Korea Institute of Industrial Technology Gwangju 506-824 Korea Dept. of Mechanical Engineering Mokpo National University Mokpo 534-729 Korea

Rotary bending fatigue tests were carried out with two kinds of materials, S43C and S50C, using the front engine and front drive shaft （FF shaft） of vehicle. The specimens were induction hardened about 1.0mm depth from the specimen surface, and the hardness value on the surface was about HRC56-60. The tested environment temperatures were -30, 25 and 80℃ in order to look over effect of the induction hardening and the environmental temperatures on the fatigue characteristics. The fatigue limit of induction hardened specimens increased more about 45% than non-hardened specimens showing that the endurances of S43C and S50C were 98.1 and 107.9MPa in non-hardened samples, 147.1 and 156.9MPa in hardened samplesrespectably. The maximum tensile and compressive stress on the small circular defect was about ＋250 and -450MPa respectively when circular defect is situated on top and bottom. The fatigue life increased 80, 25 and -30℃ in order regardless of hardening. In comparison of the fatigue lives on the basis of tested result at 25℃, the fatigue lives of non-hardened specimens decreased about 35%, but that of hardened specimens decreased about only 5% at 80℃ more than at 25℃. And fatigue life of non-hardened and hardened specimens were about 110% and 120% higher at -30℃ than that of 25℃. Based on the result of stress distribution near the defect, the tensile and compressive stress repeatedly generated by load direction were the largest on the small circular defect due to the stress concentration.

关键词： induction hardening fatigue test front engine and front drive shaft,fatigue crack fatigue life fatigue life ratio

N-terminal pro-B-type natriuretic peptide as prognostic marker for patients of non ST-segment elevation myocardial infarction

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Journal of Central South University 2013年第8期20卷 2226-2232页

作者： SHON Ho Sun HWANG Kyung kuk BAE jang Whan KIM Kyung Ah LEE Jong Yun RYU Keun Ho Database and Bioinformatics Laboratory School of Electrical & Computer Engineering also PSM of School of Medicine Chungbuk National University Department of Medicine School of Medicine Chungbuk National University Department of Biomedical Engineering School of Medicine Chungbuk National University Department of Informatics and Convergence Chungbuk National University Cheongju

In this work, we analyzed only the patients of the NSTEMI (non ST-segment elevation myocardial infarction) who arrived at the hospital within 12 h after symptoms started. Using NSTEMI follow-up data within, the characteristics of the clinical data, the risk factor, and the blood tested in the hospital visit were analyzed for MACE (major adverse cardiac events) patients. MACE includes cardiac death, MI (myocardial infarction), Re-PCI, and CABG (coronary artery bypass graft). As a result, from the NSTEMI patients which can be followed up for over 12 m, NT-ProBNP (p=0.014) and age (p=0.045) are found to be the independent risk factors related to MACE. Accordingly, they can be useful for the diagnosis and prognosis for NSTEMI patients as a biomarker.

关键词：心肌梗死预后判断患者 ST 利钠肽 B型 MACE 生物标志物

Anaphylactic shock induced by polyethylene glycol after bowel preparation for the colorectal cancer surgery:A case report

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世界临床病例杂志 2023年第23期11卷 5589-5594页

作者： Go Woon Park Nahyeon Park Jung Cheol kuk Eung Jin Shin Dae Ro Lim Department of General Surgery Soonchunhyang Bucheon HospitalBucheon 14584South Korea

BACKGROUND Polyethylene glycol(PEG)is widely used as an additive because of its hydrophilic and chemically inert ***,there are been increasing reports of PEG allergies,including anaphylaxis,although they are still *** case report aims to raise awareness,that the commonly used bowel cleansing agent containing PEG can cause serious allergic *** SUMMARY Prior to surgery for sigmoid colon cancer,a 63-year-old man was prescribed a bowel cleansing agent containing *** 30 min of ingestion,he developed symptoms of anaphylactic shock and did not respond to initial intramuscular epinephrine *** diagnosis of anaphylaxis to PEG,he was stabilized with fluid hydration and continuous norepinephrine *** While allergic reactions to PEG are rare,they can be ***,it is crucial for clinicians to be aware of this possibility and to diagnose and resuscitate patients immediately.

关键词： Polyethylene glycol Anaphylaxis Sigmoid colon cancer Bowel preparation Case report