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World Journal of Gastroenterology 2012年第25期18卷 3215-3222页

作者： Myeong Jun Song Si Hyun Bae Ie Ryung yoo Chung-hwa Park Jeong Won Jang Ho Jong Chun Byung Gil Choi Hae Giu Lee Jong Young Choi seung Kew yoon Department of Internal Medicine College of MedicineThe Catholic University of KoreaSeoul 137-040South Korea Department of Nuclear Medicine College of MedicineThe Catholic University of KoreaSeoul 137-040South Korea Department of Radiology College of MedicineThe Catholic University of KoreaSeoul 137-040South Korea

Myeong Jun Song,Si Hyun Bae,Chung-hwa Park,Jeong Won Jang,Jong Young Choi,seung Kew yoon,Department of Internal Medicine,College of Medicine,The Catholic University of Korea,Seoul 137-040,South Korea Ie Ryung yoo,Department of Nuclear,Medicine College of Medicine,The Catholic University of Korea,Seoul 137-040,South Korea Ho Jong Chun,Byung Gil Choi,Hae Giu Lee,Department of Radiology,College of Medicine,The Catholic University of Korea,Seoul 137-040,South

关键词：肝癌预测显像计算机断层扫描应用价值评价标准改性反应

Inverse correlation between gastroesophageal reflux disease and atrophic gastritis assessed by endoscopy and serology

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World Journal of Gastroenterology 2022年第8期28卷 853-867页

作者： yoo Min Han Su Jin Chung Seokha yoo Jong In Yang Ji Min Choi Jooyoung Lee Joo Sung Kim Department of Internal Medicine and Healthcare Research Institute Seoul National University Hospital Healthcare System Gangnam CenterSeoul 06236South Korea Department of Anesthesiology and Pain Medicine Seoul National University College of MedicineSeoul 03080South Korea Department of Internal Medicine and Liver Research Institute Seoul National University College of MedicineSeoul 03080South Korea

BACKGROUND Helicobacter pylori(***)infection is known to prevent the occurrence of gastroesophageal reflux disease(GERD)by inducing gastric mucosal ***,little is known about the relationship between atrophic gastritis(AG)and *** To confirm the inverse correlation between AG and the occurrence and severity of *** Individuals receiving health checkups who underwent upper gastrointestinal endoscopy at Seoul National University Healthcare System Gangnam Center were *** grade of reflux esophagitis was evaluated according to the Los Angeles *** AG(EAG)was categorized into six *** AG(SAG)was defined as pepsinogen I≤70 ng/m L and pepsinogen I/II ratio≤*** association between the extent of EAG and SAG and the occurrence and severity of GERD was evaluated using multivariate logistic regression *** In total,4684 individuals with GERD were compared with 21901 healthy *** multivariate logistic regression analysis,advanced age,male sex,body mass index>23 kg/m2,presence of metabolic syndrome,current smoking,and alcohol consumption were associated with an increased risk of *** for *** immunoglobulin G antibodies was associated with a decreased risk of *** was an inverse correlation between the extent of EAG and occurrence of GERD:Odds ratio(OR),1.01[95%confidence interval(CI):0.90-1.14]in C1,0.87(0.78-0.97)in C2,0.71(0.62-0.80)in C3,0.52(0.44-0.61)in O1,0.37(0.29-0.48)in O2,and 0.28(0.18-0.43)in ***,the extent of EAG showed an inverse correlation with the severity of *** presence of SAG was correlated with a reduced risk of GERD(OR=0.49,95%CI:0.28-0.87,P=0.014).CONCLUSION The extent of EAG and SAG exhibited strong inverse relationships with the occurrence and severity of *** followed by *** infection may be independently protect against GERD.

关键词： Gastroesophageal reflux disease Reflux esophagitis Helicobacter pylori Atrophic gastritis Pepsinogen

Comparison of microwave and conventional heating on physicochemical properties and phenolic profiles of purple sweetpotato and wheat flours

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Food Bioscience 2022年第2期46卷 923-933页

作者： Rongbin Cui Michelle Ji Yeon yoo Fan Zhu School of Chemical Sciences University of AucklandPrivate Bag 92019Auckland 1142New Zealand School of Science Faculty of Health and Environment SciencesAuckland University of TechnologyAucklandNew Zealand

The hydrothermal treatment assisted with microwaves on physicochemical properties and phenolic profiles of purple sweetpotato flour and wheat flour was studied and compared with those of conventional heat *** treatments significantly decreased the enthalpy change,pasting viscosity and gelling capacity of flours,while increasing particle size,gelatinization temperatures and content of resistant *** induced more severe damages on the starch granule morphology and crystallinity than conventional heat treatment,which could be attributed to the intensive friction and collision produced by electromagnetic *** total concentrations of hydroxycinnamic acid derivatives and anthocyanins in purple sweetpotato flour extracted using microwaves at 100℃ were 36%and 68%higher than those in the samples after conventional heat treatment at 100℃,*** waves caused a higher extent of cell damage due to sudden temperature rise during microwave ***,microwave treatment has potential to produce novel functionalities and nutritional values of flours and can be applied as an effective approach for other starch-based food products.

关键词： Ipomoea batatas Microwave heating Conventional heating Dielectric property Phenolics Resistant starch Cereal processing Starch gelatinization Domestic cooking

Reevaluation of the expanded indications in undifferentiated early gastric cancer for endoscopic submucosal dissection

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World Journal of Gastroenterology 2022年第15期28卷 1548-1562页

作者： Jiyoung yoon seung-Yeon yoo Young Soo Park Kee Don Choi Beom Su Kim Moon-Won yoo In Seob Lee Jeong hwan yook Ga Hee Kim Hee Kyong Na Ji Yong Ahn Jeong Hoon Lee Kee Wook Jung Do Hoon Kim Ho June Song Gin Hyug Lee Hwoon-Yong Jung Department of Gastroenterology Asan Medical CenterUniversity of Ulsan College of MedicineSeoul 05505South Korea Department of Pathology Asan Medical CenterUniversity of Ulsan College of MedicineSeoul 05505South Korea Department of Surgery Asan Medical CenterUniversity of Ulsan College of MedicineSeoul 05505South Korea

BACKGROUND Although the criteria for the indication of endoscopic submucosal dissection(ESD)for undifferentiated early gastric cancer(UD-EGC)have been recently proposed,accumulating reports on the non-negligible rate of lymph node metastasis(LNM)after indicated ESD raise questions on the reliability of the current *** To investigate the prevalence and risk factors of LNM in UD-EGC cases meeting the expanded indication for *** We retrospectively reviewed 4780 UD-EGC cases that underwent surgical resection between January 2008 and February 2019 at Asan Medical Center,a tertiary university hospital in *** identify the risk factors of LNM of UDEGC meeting the expanded criteria for ESD,we performed a case-control study by matching the cases with LNM to those without at a ratio of 1:*** reviewed the clinical,endoscopic,and histologic features of the cases to identify features with a significant difference according to the presence of *** and multivariate logistic regression analyses were performed to estimate the odds ratios(ORs).RESULTS Of the 4780 UD-EGC cases,1240(25.9%)were identified to meet the expanded indication for *** the 1240 cases,14(1.1%)cases had *** the various clinical,endoscopic,and histopathological features that were evaluated,mixed histology(tumors consisting of 10%-90%of signet ring cells)had a marginally significant association(P=0.059)with the risk of ***,diffuse blurring of the muscularis mucosae(MM)underneath the tumorous epithelium,a previously unrecognized histologic feature,had a significant association with the absence of LNM(P=0.028).Multivariate logistic regression analysis showed that the blurring of MM was the only explanatory variable significantly associated with a reduced risk of LNM(OR:0.12,95%CI:0.02-0.95;P=0.045).CONCLUSION The risk of LNM is higher than expected when using the current expanded indication for *** evaluation could provide useful clues for reducing the

关键词： Gastric cancer Undifferentiated carcinoma Endoscopic submucosal dissection Lymph node metastasis

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旋转热管砂轮冷凝端单翅片对流换热仿真研究

机械制造 2024年第5期62卷 15-19页

作者：何永节杜宝瑞姚俊袁达忠沈阳航空航天大学机电工程学院沈阳110136 中国科学院工程热物理研究所北京100190 中国科学院大学北京100049

为优化旋转热管砂轮冷凝端结构,在冷凝端添加翅片,增大散热面积,实现有效散热,从而提高换热能力。应用FLUENT软件对旋转热管砂轮冷凝端单翅片进行对流换热仿真研究,通过建模分析翅片高度、翅片厚度、冷风条件、转速对冷凝端换热性能的... 详细信息

为优化旋转热管砂轮冷凝端结构,在冷凝端添加翅片,增大散热面积,实现有效散热,从而提高换热能力。应用FLUENT软件对旋转热管砂轮冷凝端单翅片进行对流换热仿真研究,通过建模分析翅片高度、翅片厚度、冷风条件、转速对冷凝端换热性能的影响。研究表明,当翅片高度为6 mm,翅片厚度为1 mm时,冷凝端外壁面的平均对流换热系数最大,平均温度最低。当冷风压力为0.6MPa时,冷凝端换热性能较好。随着旋转速度的加快,冷凝端外壁面平均对流换热系数增大,表明换热能力不断提高。仿真研究结果为旋转热管砂轮冷凝端结构优化及后续磨削试验提供了参考,具有较高的实际工程应用价值。

关键词：旋转热管砂轮翅片对流换热研究

Ultralong persistent luminescence from carbon dots

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Light(Science & Applications) 2022年第6期11卷 1019-1020页

作者： seunghyup yoo Youngjin Song Sangin Hahn School of Electrical Engineering Korea Advanced Institute of Science and Technology(KAIST)Daejeon 34141Republic of Korea

Hour-level persistent luminescence is realized with carbon dots embedded in cyanuric acid,the composition of which is easily obtained by the microwave-assisted heating of carbon dots and *** forming donor-acceptor blends,the proposed composition yields intermediate states with long lifetimes,providing a rare-earth-metal-free route to ultralong persistent luminescence.

关键词： luminescence donor microwave

Arterial stiffness expressed as brachial–ankle pulse wave velocity and gait assessment independent of lower extremity strength:a cross-sectional study in the older men population

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Journal of Geriatric Cardiology 2023年第2期20卷 91-99页

作者： Tae Kyung yoo seunghee Lee Sae-Jong Park Jong-Young Lee Department of Medicine MetroWest Medical CenterFraminghamUSA Department of Physical Education Korea UniversitySeoulSouth Korea Division of Sports Science Korea Institute of Sport ScienceSeoulSouth Korea Division of Cardiology Department of Internal MedicineKangbuk Samsung HospitalSungkyunkwan University School of MedicineSeoulSouth Korea

BACKGROUND Older men are more vulnerable to fatal falls than women,and gait disturbances contribute to the risk of *** have assessed the association between arterial stiffness and gait dysfunction,but the results have been *** study aimed to conduct a cross-sectional analysis to evaluate the association between brachial–ankle pulse wave velocity(baPWV)and gait assessment in older *** Data from the 2014–2015 Korea Institute of Sport Science Fitness Standards project were used for the *** inclusion criteria were men aged>65 years with gait assessment[the 30-s chair stand test(30s-CST),the timed up and go(TUG)test,the figure-of-8 walk(F8W)test,the 2-min step test(2MST),and the 6-min walk test(6MWT)]and baPWV measurement *** linear regression analysis was conducted with multiple confounding factor adjustments,including lower extremity isometric *** A total of 291 participants were included in the *** mean age was 71.38±4.40 *** mean values were as follows:(1)30s-CST,17.48±5.00;(2)TUG test,6.01±1.10 s;(3)F8W test,25.65±4.71 s;(4)2MST,102.40±18.83 per 2 min;and(5)6MWT,500.02±85.65 *** multivariable adjustment,baPWV was associated with the 6MWT(β=−0.037,95%CI:−0.072–−0.002),TUG test(β=0,95%CI:0.000–0.001),and F8W test(β=0.002,95%CI:0.000–0.004).baPWV was not associated with the 30s-CST and *** The current study showed a statistically significant association between gait assessments and arterial stiffness,independent of lower extremity ***,this association was *** prospective studies are needed to elucidate the complex relationship between arterial stiffness and gait dysfunction.

关键词： stiffness sectional pulse

Extremely rare case of necrotizing gastritis in a patient with autoimmune hepatitis: A case report

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World Journal of Clinical Cases 2021年第14期9卷 3472-3477页

作者： seung Ki Moon Jeong-Ju yoo Sang Gyune Kim Young Seok Kim Department of Internal Medicine Soonchunhyang University Bucheon HospitalBucheon 14584South Korea Department of Gastroenterology and Hepatology Soonchunhyang University School of MedicineBucheon 14584South Korea

BACKGROUND Autoimmune hepatitis can cause liver fibrosis,liver cirrhosis,and hepatocellular *** treatment option include the use of steroids and/or immunesuppressive agents such as ***,these drugs have some side ***,close follow-up is needed during ***,we present an extremely rare case of a patient with an autoimmune hepatitis who died from necrotizing gastritis during immunosuppressive *** SUMMARY A 52-year-old female patient was diagnosed with autoimmune *** treated this patient with immunosuppressive ***-dose steroid treatment was initially *** azathioprine treatment was added while steroid was *** weeks after the start of treatment,she visited the emergency room due to generalized abdominal pain and *** computed tomography scan,the patient was diagnosed with necrotizing gastritis and the patient progressed to septic *** for sepsis was continued in the intensive care ***,the patient died at 6 h after admission to the emergency *** In patients with autoimmune infections undergoing immunosuppressant therapy,rare complications such as necrotizing gastritis may occur,thus requiring clinical attention.

关键词： Autoimmune hepatitis Azathioprine 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

Varicella-zoster virus meningitis after spinal anesthesia:A case report

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World Journal of Clinical Cases 2022年第25期10卷 9127-9131页

作者： Ye-Won Lee Byunghoon yoo Yun Hee Lim Department of Anesthesiology and Pain Medicine College of MedicineInje UniversitySanggye Paik HospitalSeoul 01757South Korea

BACKGROUND Headache is a common complication of regional *** treatment of post spinal anesthesia headache varies depending on the *** meningitis is rare,it can cause significant harm to the *** dural puncture headache and septic meningitis are the most commonly suspected causes of post spinal anesthesia headache;however,other causes should also be *** SUMMARY A 69-year-old woman was scheduled for varicose vein stripping surgery under spinal *** procedure was performed aseptically,and surgery was completed without any *** 4 d,the patient visited the emergency room with complaints of headache,nausea,and *** examination revealed that the patient was *** the history of spinal anesthesia,post dural puncture headache and septic meningitis was initially suspected,and the patient was treated with empirical ***,varicella-zoster virus PCR test result was positive,and all other test results were *** patient was diagnosed with meningitis caused by varicella-zoster virus and was treated with acyclovir for 5 *** headache improved,and the patient was discharged without any *** Viral meningitis due to virus reactivation may cause headache after regional ***,clinicians should consider multiple etiologies of headache.

关键词： Aseptic meningitis Headache Regional anesthesia Spinal anesthesia Varicella zoster virus infection Case report