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The beneficial impacts of splanchnic vasoactive agents on hepatic functional recovery in massive hepatectomy porcine model

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Hepatobiliary Surgery and Nutrition 2021年第3期10卷 325-336页

作者： Hye-Sung Jo Jae Hyun Han yoon young choi Jin-I Seok young-In yoon Dong-Sik Kim Division of HBP Surgery and Liver Transplantation Department of SurgeryKorea University College of MedicineSeoulRepublic of Korea Department of Surgery St.Vincent’s HospitalCollege of MedicineThe Catholic University of KoreaSeoulRepublic of Korea Department of Biomedical Science Korea University College of Medicine Graduate SchoolSeoulRepublic of Korea Division of Hepatobiliary Surgery and Liver Transplantation Department of SurgeryAsan Medical CenterUniversity of Ulsan College of MedicineSeoulRepublic of Korea

Background:Excessive portal pressure after massive hepatectomy can cause hepatic sinusoidal injury and have deleterious impacts on hepatic functional recovery,contributing to developing post-hepatectomy liver *** study aimed to assess the effects of splanchnic vasoactive agents on hepatic functional recovery and regeneration while clarifying the underlying mechanism,using a 70%hepatectomy porcine ***:Eighteen pigs undergoing 70%hepatectomy were involved in this study and divided into three groups:control(n=6),terlipressin(n=6),and octreotide(n=6).Terlipressin(0.5 mg)and octreotide(0.2 mg)were administered 3 times a day for each group with the first dose starting just before surgery until the 7th postoperative day,at which time the surviving pigs were *** the period,portal pressure,liver weight,biochemical analysis,histological injury score,and molecular markers were evaluated and compared between ***:The 7-day survival rates in the octreotide,terlipressin,and control groups were 100%,83.3%,and 66.7%,*** portal pressures decreased in both terlipressin and octreotide groups than the control group at 30 minutes,1 hour and 6 hours after *** amount of regeneration measured by liver weight to body weight ratio at the time of sacrifice in the terlipressin group was smaller than that in the control group(117%vs.129%,P=0.03).Serum aspartate aminotransferase(AST)and total bilirubin levels at 1 and 6 hours after hepatectomy and prothrombin time/international normalized ratio(PT/INR)at 6 hours after hepatectomy were significantly improved in the terlipressin and octreotide groups compared to the control *** endothelin-1(ET-1)was significantly lower in the terlipressin group than that in the control group 6 hours after hepatectomy(P<0.01).The histological injury score in the control group was significantly higher than that in the terlipressin group on the 7th postoperative day(P<0.01).Conclusions:Splanc

关键词： Hepatectomy portal pressure terlipressin somatostatin

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Deciphering metastatic route-specific signals and their microenvironment interactions in peritoneal metastasis of gastric cancer

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Cancer Communications 2024年第4期44卷 514-517页

作者： Ki Tae Kim Jae Eun Lee Jae-Ho Cheong In Cho yoon young choi Department of Molecular Genetics&Dental Pharmacology School of DentistrySeoul National UniversitySeoulRepublic of Korea Dental Research Institute and Dental Multi-omics Center Seoul National UniversitySeoulRepublic of Korea Portrai Inc. SeoulRepublic of Korea Department of Surgery Yonsei University Health SystemYonsei University College of MedicineSeoulRepublic of Korea Department of Surgery Soonchunhyang Bucheon HospitalSoonchunhyang University College of MedicineBucheonRepublic of Korea

Gastric cancer(GC)is a pervasive global malignancy with high mortality rates due to distant metastasis[1].GC metastasis can occur via hematogenous route,peri-toneal route,and specifically through ovarian spread in females[2].Among these,peritoneal metastasis is the most prevalent and challenging condition to treat[3].The Cancer Genome Atlas(TCGA)has uncovered four molec-ular subtypes of GC:microsatellite instability,Epstein-Barr virus-related,chromosomal instability,and genomically stable[4].

关键词： metastasis peritoneal cancer

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Single patient classifier as a prognostic biomarker in pT1N1 gastric cancer:Results from two large Korean cohorts

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Chinese Journal of Cancer Research 2021年第5期33卷 583-591页

作者： yoon young choi Eunji Jang Hyunki Kim Kyoung-Mee Kim Sung Hoon Noh Tae Sung Sohn Yong-Min Huh Ji Yeong An Jae-Ho Cheong Department of Surgery CHA Ilsan Medical CenterCHA University School of MedicineGoyang-si 1205Korea Department of Surgery Yonsei University Health SystemSeoul 03722Korea Department of Radiology Yonsei University Health SystemSeoul 03722Korea Department of Pathology Yonsei University Health SystemSeoul 03722Korea Department of Pathology and Translational Genomics Samsung Medical Center Sungkyunkwan University School of MedicineSeoul 06351Korea Department of Surgery Samsung Medical CenterSungkyunkwan University School of MedicineSeoul 06351Korea YUHS-KRIBB Medical Convergence Research Institute Seoul 03722Korea Brain Korea 21 PLUS Project for Medical Science Yonsei University College of MedicineSeoul 03722Korea

Objective:Benefits of adjuvant treatment in pT1 N1 gastric cancer(GC)remain ***,an effective biomarker for early GC is the need of the *** prognostic and predictive roles of single patient classifier(SPC)were validated in stageⅡ/Ⅲ*** this study,we aimed to elucidate the role of SPC as a biomarker for pT1 N1 ***:The present retrospective biomarker study(NCT03485105)enrolled patients treated for pT1 N1 GC between 1996 and 2012 from two large hospitals(the Y cohort and S cohort).For SPC,mRNA expression of four classifier genes(GZMB,WARS,SFRP4 and CDX1)were evaluated by real-time reverse transcription-polymerase chain reaction *** SPC was revised targeting pT1 stages and the prognosis was stratified as high-and lowrisk group by the expression of SFRP4,a representative epithelial-mesenchymal transition ***:SPC was evaluated in 875 patients(n=391 and 484 in the Y and S cohorts,respectively).Among 864 patients whose SPC result was available,41(4.7%)patients experience GC *** to revised SPC,254(29.4%)patients were classified as high risk[123(31.5%)and 131(27.1%)in the Y and S cohorts,respectively].The high risk was related to frequent recurrence in both Y and S cohort(log-rank P=0.023,P<0.001,respectively),while there was no difference by GZMB and WARS *** analyses of the overall-cohort confirmed the high risk of revised SPC as a significant prognostic factor[hazard ratio(HR):4.402(2.293-8.449),P<0.001]of GC.A significant difference was not detected by SPC in the prognosis of patients in the presence and absence of adjuvant treatment(log-rank P=0.670).Conclusions:The present study revealed the revised SPC as a prognostic biomarker of pT1 N1 GC and suggested the use of the revised SPC for early-stage GC as like stageⅡ/Ⅲ.

关键词： Gastric cancer biomarker prognosis chemotherapy

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Comments to young surgeons concerning laparoscopic spleenpreserving D2 lymph node dissection for advanced gastric cancer on the upper body

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Chinese Journal of Cancer Research 2014年第3期26卷 231-233页

作者： yoon young choi Ji Yeong An Woo Jin Hyung Sung Hoon Noh Department of Surgery Yonsei University Health System Yonsei University College of Medicine

Qualified radical gastrectomy with lymph node dissection is very important to the prognosis of patients with gastric cancer. Now D2 lymph node dissection is standard procedure for gastric cancer surgery, and spleen hilar lymph node dissection is mandatory for gastric cancer in upper body. Because the anatomy of vessels in this area is very complicated, D2 lymph node dissection is technical challenging not only for open gastrectomy but also for laparoscopic one. Adapting a new technique is important to all surgeons, but we surgeons should always consider a patient＇s safety as the most important factor during surgery and that efforts should be based on scientific rationale with oncologic principles. I hope that the recent report by Huang et al. about laparoscopic spleen preserving hilar lymph node dissection would be helpful to young surgeons who will perform laparoscpic total gastrectomy for gastric cancer.

关键词： Gastric cancer lymph node dissection laparoscopy spleen

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Current practice of gastric cancer treatment

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Chinese Medical Journal 2014年第3期127卷 547-553页

作者： yoon young choi Ji Yeong An Hyung-Il Kim Jae-Ho Cheong Woo Jin Hyung Sung Hoon Noh Department of Surgery Yonsei University Health System Yonsei University College of Medicine Seoul Republic of Korea

Objective The aim of this review was to overview the current practice of gastric cancer treatment including surgery and other adjuvant *** sources The review was based on data obtained from the published articles and main guidelines in the East and *** selection Articles with high level of evidence or current best evidence in each issue were selected to be *** Although varied adjuvant modalities have been proved to be benefit for treating gastric cancer,surgery is still the most important treatment strategy against gastric *** adapting to new technology is important but it should be balanced with an effort to establish sound scientific rationale that adheres to oncologic *** Future treatment of gastric cancer will be focused on tailored,personalized *** achieving it,collaboration across disciplines is *** the philosophy of caring for the patients with gastric cancer should be rooted in the realization of true patient benefit regardless of who is providing the *** these philosophies,we can shift the scientific and technological advances toward triumph over gastric cancer.

关键词： gastric cancer treatment oncology

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Increasing sulfur utilization in lithium-sulfur batteries by a Co-MOF-74@MWCNT interlayer

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Journal of Energy Chemistry 2021年第9期30卷 186-193页

作者： SiHyeon Sung Byung Hyuk Kim SeungTaek Lee Sanghyeon choi Woo young yoon Department of Materials Science and Engineering Korea University15GaAnam-dongSungbuk-GuSeoul 136-701Republic of Korea

To improve lithium-sulfur battery performance,Co-MOF-74 has been applied for the first time as an interlayer with multiwalled carbon nanotubes(MWCNTs).Co-MOF-74@MWCNT was synthesized using a solvothermal *** fabrication of Co-MOF-74@MWCNT was confirmed by scanning electron microscopy,X-ray diffraction,thermogravimetric analysis,and Brunauer-Emmett-Teller *** interlayer was fabricated using a filtration *** batteries were prepared using a CoMOF-74@MWCNT interlayer and an MWCNT interlayer and subsequently investigated via cyclic voltammetry ***-MOF-74 promotes a redox reaction and shows a small peak at 1.85 V.A symmetric and full cell test revealed that the Co-MOF-74@MWCNT cell enables a faster redox reaction and higher capacity than that of the MWCNT *** 15 cycles,the Co-MOF-74@MWCNT cell achieved a value of 1112 mAh g^(-1),which is 26% greater than that of the MWCNT cell(880 mAh g^(-1)) at 0.2 *** profile testing showed that the reason for the higher capacity of the Co-MOF-74@MWCNT cell is that it promotes the conversion of Li_(2)S_(2) to Li_(2)*** electrochemical analyses confirmed that the Co-MOF-74@MWCNT interlayer acts not only as a physical and chemical barrier but also promotes the transformation of Li_(2)S_(2) to Li_(2)S.

关键词： Li-S battery Shuttling effect Interlayer Sulfur utilization Co-MOF-74

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Numerical Visualization of Air Intake Induced by Free Surface Vortex

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Journal of Thermal Science 2017年第6期26卷 540-544页

作者： young Kyu Park Mohan Kumar Dey yoon Hwan choi Yeon Won Lee Research Institute of Industrial Science & Technology Pukyong National University Busan Korea Interdisciplinary Program of Biomedical Mechanical and Electrical Engineering Pukyong National University Busan Korea Department of Mechanical Design Engineering Pukyong National University Busan Korea

Free surface vortex control is vital in a pump sump system because the air absorbed by free surface vortex induc- es noise, vibration, and cavitation corrosion on the pumping system. In this study, the change of free surface vor- tex and air absorption in a pump intake has been investigated by the Volume of Fraction （VOF） method with steady multiphase flow model in order to represent the behavior of the free surface vortex exactly. The homoge- neous free surface model is used to apply interactions of air and water. The results show that air intake by the free surface vortex motion can be visualized using the iso-surface of air volume fraction. The vortices make an air column from the free surface to the pump intake. Also, it was found that the flee surface vortex can be controlled by installing curtain walls.

关键词： free surface vortex numerical visualization curtain wall air intake

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Ultrasound-guided intra-articular corticosteroid injection in a patient with manubriosternal joint involvement of ankylosing spondylitis:A case report

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World Journal of Clinical Cases 2023年第9期11卷 2043-2050页

作者： Min-Hee choi In-young yoon Won-Joong Kim Department of Anesthesiology and Pain Medicine Ewha Womans University Mokdong HospitalSeoul 07985South Korea

BACKGROUND Manubriosternal joint(MSJ)disease is a rare cause of anterior chest pain but can be a major sign of systemic arthritic *** patients with ankylosing spondylitis(AS),a type of systemic arthritis,chest pain can be due to MSJ involvement and can be improved by ultrasound-guided corticosteroid injection into the *** SUMMARY A 64-year-old man visited our pain clinic complaining of anterior chest *** were no abnormal findings on lateral sternum X-ray,but arthritic changes in the MSJ were observed on single-photon emission computed tomography-computed *** performed additional laboratory tests,and he was finally diagnosed with *** pain relief,we performed ultrasound-guided intra-articular(IA)corticosteroid injections into the *** the injections,his pain nearly *** For patients complaining of anterior chest pain,AS should be considered,and single-photon emission computed tomography-computed tomography can be helpful in *** addition,ultrasound-guided IA corticosteroid injections may be effective for pain relief.

关键词： Ankylosing spondylitis Anterior chest pain Manubriosternal joint Single-photon emission computed tomography-computed tomography Case report

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Uncertainty analysis of flow rate measurement for multiphase flow using CFD

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Acta Mechanica Sinica 2015年第5期31卷 698-707页

作者： Joon-Hyung Kim Uk-Hee Jung Sung Kim Joon-Yong yoon young-Seok choi Department of Mechanical Design Engineering Hanyang University Thermal & Fluid System R&BD Group Korea Institute of Industrial Technology Energy System Engineering University of Science and Technology

The venturi meter has an advantage in its use,because it can measure flow without being much affected by the type of the measured fluid or flow ***,it has excellent versatility and is being widely applied in many *** flow of a liquid containing air is a representative example of a multiphase flow and exhibits complex flow *** particular,the greater the gas volume fraction（GVF）,the more inhomogeneous the flow *** a result,using a venturi meter to measure the rate of a flow that has a high GVF generates an *** this study,the cause of the error occurred in measuring the flow rate for the multiphase flow when using the venturi meter for analysis by *** ensure the reliability of this study,the accuracy of the multiphase flow models for numerical analysis was verified through comparison between the calculated results of numerical analysis and the experimental *** a result,the Grace model,which is a multiphase flow model established by an experiment with water and air,was confirmed to have the highest ***,the characteristics of the internal flow Held about the multiphase flow analysis result generated by applying the Grace model were analyzed to find the cause of the uncertainty occurring when measuring the flow rate of the multiphase flow using the venturi meter.A phase separation phenomenon occurred due to a density difference of water and air inside the venturi,and flow inhomogeneity happened according to the flow velocity difference of each *** was confirmed that this flow inhomogeneity increased as the GVF increased due to the uncertainty of the flow measurement.

关键词： Multiphase flow Measurement Numerical analysis Venturi meter Gas volume fraction(GVF) Uncertainty Multiphase flow model Grace model

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Loose-fit graphitic encapsulation of silicon nanowire for one-dimensional Si anode design

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Journal of Materials Science & Technology 2017年第10期33卷 1120-1127页

作者： Seh-yoon Lim Sudong Chae Su-Ho Jung Yuhwan Hyeon Wonseok Jang Won-Sub yoon Jae-young choi Dongmok Whang School of Advanced Materials Science and Engineering SKKU Advanced Institute of Nanotechnology Sungkyunkwan University Suwon 440-746 South Korea Department of Energy Sdence Sungkyunkwan University Suwon 440-746 South Korea

Silicon nanowires（SiNWs） encapsulated with graphene-like carbon sheath（GS） having a void space in between（SiNW@V@GS） are demonstrated for the improved electrochemical performance of Si anode in lithium ion battery. The Si NW@V@GS structure was synthesized by a scalable fabrication method including four successive reactions： metal-catalyzed CVD growth of Si NWs, controlled thermal oxidation, and deposition of the graphitic layer, to form Si NW@SiO2@GS and additional chemical etching of sacrificial SiO2 layer between Si NWs and carbon sheath. During the synthetic process, the thickness of the void spacing was controlled by adjusting the oxidation-dependent process. The well-controlled void space and crystalline graphitic carbon sheath of the SiNW@V@GS structure enable good reversible capacity of1444 m Ahg^（-1） and cycling stability of 85% over 150 cycles.

关键词： Lithium ion battery Silicon nanowire Graphene Void spacing Anode

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