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Surgical excision of a large retroperitoneal lymphangioma: A case report

World Journal of Clinical Cases 2022年第31期10卷 11561-11566页

作者： John Hee park Donghyoun Lee Young Hee Maeng Won-bae Chang Department of Surgery Samsung Medical CenterSeoul 06351South Korea Department of Surgery Jeju National University HospitalJeju-si 63241JejudoSouth Korea Department of Pathology Jeju National University Medical CenterJeju-si 63241Jeju-doSouth Korea Department of Surgery Jeju National University Medical CenterJeju-si 63241Jeju-doSouth Korea

BACKGROUND Lymphangiomas are rare benign tumors most commonly found in children under 2 years of age;adult cases are extremely *** lymphangiomas represent less than 1%of all *** of their benign nature and possibility of spontaneous resolution,lymphangiomas are sometimes left untreated for long periods of ***,if they grow large enough to compress surrounding structures,retroperitoneal lymphangiomas may cause symptoms such as abdominal pain,nausea or *** report a case of a rapidly growing retroperitoneal lymphangioma in an adult,treated with complete surgical *** SUMMARY A 60-year-old female who was diagnosed with an intra-abdominal cystic mass(11 cm×9.5 cm)seven years ago presented to our hospital with symptoms of early satiety,nausea,and intermittent abdominal *** tomography(CT)scan confirmed interval enlargement to a 24 cm×22 cm-sized huge left retroperitoneal mass,causing left hydronephrosis by external *** was done via long midline *** to severe adhesion between the aorta and the medial border of the mass,the cyst was intentionally opened for fluid aspiration and size *** suture closure of the opening,we proceeded carefully with *** showed light yellowish serous *** mass was excised completely,and the pathology was consistent with cystic *** post-operative period was uneventful,and the patient was discharged without ***-up CT scan one month after surgery confirmed complete removal of the mass and decreased left *** Excision of the huge retroperitoneal cystic mass resulted in relief of the patient’s symptoms,originally caused by external compression,and also ruled out the possibility of malignancy.

关键词： Retroperitoneum Lymphangioma Hydronephrosis Case report

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Bioinspired magnetic cilia:from materials to applications

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Microsystems & Nanoengineering 2023年第6期9卷 107-128页

作者： Seongjin park Geonjun Choi Minsu Kang Woochan Kim Jangho Kim Hoon Eui jeong Department of Mechanical Engineering Ulsan National Institute of Science and Technology(UNIST)Ulsan44919Republic of Korea Department of Convergence Biosystems Engineering Chonnam National UniversityGwangju61186Republic of Korea Interdisciplinary Program in IT-Bio Convergence System Chonnam National UniversityGwangju61186Republic of Korea

Microscale and nanoscale cilia are ubiquitous in natural systems where they serve diverse biological *** artificial magnetic cilia have emerged as a highly promising technology with vast potential applications,ranging from soft robotics to highly precise *** this review,we comprehensively discuss the roles of cilia in nature and the various types of magnetic particles utilized in magnetic cilia;additionally,we explore the top-down and bottom-up fabrication techniques employed for their ***,we examine the various applications of magnetic cilia,including their use in soft robotics,droplet and particle control systems,fluidics,optical devices,and ***,we present our conclusions and the future outlook for magnetic cilia research and development,including the challenges that need to be overcome and the potential for further integration with emerging technologies.

关键词： magnetic overcome precise

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Proton therapy for hepatocellular carcinoma:Current knowledges and future perspectives

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World Journal of Gastroenterology 2018年第28期24卷 3090-3100页

作者： Gyu Sang Yoo jeong Il Yu Hee Chul park Department of Radiation Oncology Samsung Medical Center Sungkyunkwan University School of Medicine Department of Medical Device Management and Research Samsung Advanced Institute for Health Sciences and Technology Sungkyunkwan University

Hepatocellular carcinoma(HCC) is the second leading cause of cancer-related death, as few patients can be treated with currently available curative local modalities. In patients with HCC where curative modalities are not feasible, radiation therapy(RT) has emerged as an alternative or combination therapy. With the development of various technologies, RT has been increasingly used for the management of HCC. Among these advances, proton beam therapy(PBT) has several unique physical properties that give it a finite range in a distal direction, and thus no exit dose along the beam path. Therefore, PBT has dosimetric advantages compared with X-ray therapy for the treatment of HCC. Indeed, various reports in the literature have described the favorable clinical outcomes and improved safety of PBT for HCC patients compared with X-ray therapy. However, there are some technical issues regarding the use of PBT in HCC, including uncertainty of organ motion and inaccuracy during calculation of tissue density and beam range, all of which may reduce the robustness of a PBT treatment plan. In this review, we discuss the physical properties, current clinical data, technical issues, and future perspectives on PBT for the treatment of HCC.

关键词： radiation therapy hepatocellular carcinoma proton beam therapy X-ray therapy

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Supercooling phenomena in protein based food matrix composed of various fat,salt,and water contents

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Food Bioscience 2023年第1期51卷 447-454页

作者： Dong Hyeon park Eun jeong Kim Mi-Jung Choi Department of Food Science and Biotechnology of Animal Resources Konkuk UniversitySeoul05029Republic of Korea Refrigerator Research of Engineering Division Home Appliance and Air Solution CompanyLG ElectronicsChangwon51533Republic of Korea

Supercooling is recognized as a novel preservation method because it maintains the freshness of food without tissue damage caused by ice *** is a complicated matrix composed of several components with varying freezing points depending on the food *** this study,effects of food compositions on stability of supercooling preservation were investigated using a model food to define the interaction between supercooling maintenance and the factor of food ***,chicken meat(leg and wing)was used to confirm food freshness during extended *** higher the fat and salt content of the model food,better was the maintenance of the supercooled state;however,higher the moisture content,worse was the maintenance of supercooled *** presence of the fat layer affected the supercooling maintenance *** experiments with real food,the chicken leg and wing samples were 80%and 90%supercooled,*** samples conserved at superooling presented significantly lower drip loss,total volatile basic nitrogen,and total aerobic count than those of the *** addition,water holding capacity of supercooled samples were not significant differences compared to frozen samples.

关键词： Food composition Supercooling Freshness Chicken meats

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Comparison of litterfall production in three forest types in Jeju Island, South Korea

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Journal of Forestry Research 2020年第3期31卷 945-952页

作者： Ji Young An Si Ho Han Woo Bin Youn Sang Ick Lee Afroja Rahman Huong Thi Thuy Dao jeong Min Seo Aung Aung Hyung-Soon Choi Hwa Ja Hyun Byung bae park Department of Natural Resources Kyoto UniversityKyoto 606-8502Japan Department of Environment and Forest Resources Chungnam National UniversityDaejeon 34134Republic of Korea Forest Environment Conservation Division Korea Forest ServiceDaejeon 35208Republic of Korea Forest Conservation Department National Institute of Forest ScienceSeoul 02455Republic of Korea Warm Temperate and Subtropical Forest Research Center National Institute of Forest ScienceSeogwipo 63582Republic of Korea

Litterfall, which is influenced by physical and biological factors, is a major pathway for carbon and nutrient cycling in forest ecosystems. The purpose of this study was to investigate monthly litterfall production in three forests in Jeju Island differentiated by forest composition and precipitation: Cheongsu(Quercus glauca as the dominant species;low precipitation), Seonheulb(Q. glauca as the dominant species;high precipitation), and Seonheulm(Q. glauca and Pinus thunbergii as the dominant species;high precipitation). Litterfall was collected monthly from April to December 2015 and divided into leaf litter, twig, bark, seeds, and unidentified *** patterns of litterfall production varied across stands according to their species composition. However,the amount of leaf litterfall and total litterfall were comparable among stands, ranging from 362 to 375 g m-2 for leaf litter and 524 g m-2 to 580 g m-2 for total *** leaf litter in May was the highest in all stands, while needle litter was the highest in December in *** twig litterfall in July may be attributable to high rainfall with strong winds and storms during the rainy season. Although forest type and climate factor had no influence on litterfall amounts in this study, the pattern of litterfall production was species dependent, suggesting diverse effects on carbon and nutrient cycling in these forests.

关键词： Coniferous forest Evergreen broadleaved forest Gotjawal Leaf litter Precipitation Temperature

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Validity of fatty liver prediction scores for diagnosis of fatty liver by Fibroscan

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Hepatobiliary & Pancreatic Diseases International 2024年第4期23卷 353-360页

作者： Seogsong jeong Sun Jae park Seong Kyun Na Sang Min park Byung-Cheol Song Yun Hwan Oh Department of Biomedical Sciences Seoul National University Graduate SchoolSeoul 03080Korea Department of Biomedical Informatics CHA University School of MedicineCHA UniversitySeongnam 13488Korea Department of Internal Medicine Inje University College of MedicineSeoul 50834Korea Department of Family Medicine Seoul National University HospitalSeoul National University College of MedicineSeoul 03080Korea Department of Internal Medicine Jeju National University HospitalJeju National University College of MedicineJeju 63241Korea Department of Family Medicine Jeju National University HospitalJeju National University College of MedicineJeju 63241Korea Department of Family Medicine Chung-Ang University Gwangmyeong HospitalChung-Ang University College of MedicineGwangmyeong 14353Korea

Background:The Korea National Health and Nutrition Examination Survey nonalcoholic fatty liver disease(K-NAFLD)score was recently developed with the intent to operationally define nonalcoholic fatty liver disease(NAFLD).However,there remained an external validation that confirmed its diagnostic performance,especially in patients with alcohol consumption or hepatitis virus ***:Diagnostic accuracy of the K-NAFLD score was evaluated in a hospital-based cohort consisting of 1388 participants who received Fibroscan®.Multivariate-adjusted logistic regression models and the contrast estimation of receiver operating characteristic curves were used for validation of the K-NAFLD score,fatty liver index(FLI),and hepatic steatosis index(HSI).Results:K-NAFLD-moderate[adjusted odds ratio(aOR)=2.53,95%confidence interval(CI):1.13-5.65]and K-NAFLD-high(aOR=4.14,95%CI:1.69-10.13)groups showed higher risks of fatty liver compared to the K-NAFLD-low group after adjustments for demographic and clinical characteristics,and FLI-moderate and FLI-high groups revealed aORs of 2.05(95%CI:1.22-3.43)and 1.51(95%CI:0.78-2.90),*** addition,the HSI was less predictive for Fibroscan®-defined fatty *** K-NAFLD and FLI also demonstrated high accuracy in the prediction of fatty liver in patients with alcohol consumption and chronic hepatitis virus infection,and the adjusted area under curve values were comparable between K-NAFLD and ***:Externally validation of the K-NAFLD and FLI showed that these scores may be a useful,noninvasive,and non-imaging modality for the identification of fatty *** addition,these scores also predicted fatty liver in patients with alcohol consumption and chronic hepatitis virus infection.

关键词： Nonalcoholic fatty liver disease Fatty liver index Hepatic steatosis index

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Castleman's disease of the spleen

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World Journal of Gastroenterology 2015年第5期21卷 1675-1679页

作者： Hee-jeong Lee Ho-Jong Jeon Sang-Gon park Chi-Young park Department of Internal Medicine hemato-oncologyChosun University Hospital501-717 GwangjuSouth Korea Department of Pathology Chosun University Hospital501-717 GwangjuSouth Korea

Castleman's disease(CD) is a rare lymphoproliferative disorder of unknown ***,it occurs as a localized(unicentric) disease or as a systemic(multicentric) *** Castleman's disease(UCD) presents as a solitary mass and primarily affects the mediastinal,retroperitoneal,and cervical lymph *** contrast to multicentric CD,which involves peripheral lymphadenopathy and numerous systemic symptoms,UCD is not typically associated withgeneralized *** main distinct histologic variants are recognized:hyaline-vascular type,plasma cell type,and mixed *** CD is ***,UCD exclusively in the spleen is extremely rare,with only 2 cases described in the literature to ***,we describe an asymptomatic 75-yearold man with a 5.7 cm × 4.5 cm sized heterogenous enhanced mass located in the *** underwent surgical resection for diagnosis and treatment.A pathologic examination indicated the hyaline-vascular type of *** this patient,the preoperative diagnosis was difficult to determine,and therefore,invasive procedures were required.

关键词： Castleman’s disease Hyaline-vascular type Spleen

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Driving characteristics of octagon-type ultrasonic motor

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Journal of Central South University 2013年第1期20卷 71-75页

作者： KIM Jong-Wook park Choong-Hyo LIM Jung-Hoon jeong Seong-Su park Jong-Kyu park Tae-Gone Changwon National University Sarim-dongChangwon-siGyeongsangnam-do641-773Korea

Structure of the octagon-type ultrasonic motor was proposed and designed so as to allow the motor to drive small actuator. The stator of the motor consisted of the octagon shape elastic body and four rectangular plate ceramics. The four ceramics were attached to outer surfaces of the octagon elastic body. The same phase voltages were applied to the ceramics on horizontal surfaces, and 90° phase difference voltages were applied to the ceramics on vertical surfaces. When the AC voltage with 90° phase difference was applied in ceramics, the elliptical displacement of unimorph bars was generated by generating bending vibration. To find the maximum displacement model that generates elliptical displacement at the centers of the inner surfaces, the finite element analysis program ATILA was used. The analyzed results were compared to the experimental results. As a result, the speed and torque are increased linearly by increasing the input voltage and the speed of motors can be controlled by changing the applied voltages.

关键词： octagon-type 90° phase difference ultrasonic motor ATILA

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Rechargeable Na-MnO_(2) battery with modified cell chemistry

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Journal of Energy Chemistry 2023年第9期84卷 414-423页

作者： Sirugaloor Thangavel Senthilkumar Rebeca Marcilla Youngsik Kim Jesus Palma Mani Ulaganathan jeong-Sun park School of Energy&Chemical Engineering Ulsan National Institute of Science and Technology(UNIST)Ulsan 689-798Republic of Korea Electrochemical Processes Unit IMDEA Energy InstituteAvda.Ramón de La Sagra 328935MóstolesSpain Center for Advanced Materials Research Research Institute of Science and TechnologyUniversity of SharjahP.O.Box 27272SharjahUnited Arab Emirates Energy Materials and Devices Lab 4TOONE CorporationUNIST-gil 50Ulsan 689-798Republic of Korea Department of Sciences Amrita School of Physical SciencesAmrita Vishwa VidyapeethamCoimbatore 641112India

High voltage,high energy density,nominal cycle life,and low cost are the most critical requirements of rechargeable batteries for their widespread energy storage applications in electric vehicles and renewable energy ***-MnO_(2) battery could be a low-cost contender,but it suffers extensively from its low cell voltage and poor *** this study,we modified the conventional cell structure of Na-MnO_(2) battery and established altered cell chemistry through a hybrid electrochemical process consisting of Na striping/plating at the anode and Zn^(2+) insertion/de-insertion along with MnO_(2) dissolution/deposition at the *** the modification,Na-MnO_(2) battery exhibits a discharge capacity of 267.10 mA h/g and a cell voltage of 3.30 V(***/Na^(+)),resulting in a high specific energy density of 881.43 Wh/*** 300 cycles,the battery retains 98% of its first-cycle discharge capacity with100% coulombic ***,Na metal-free battery assembled using sodium biphenyl as a safer anode also delivers an excellent energy density of 810.0 Wh/*** work could provide a feasible method to develop an advanced Na-MnO_(2) battery for real-time energy storage applications.

关键词： Hybrid battery Sodium metal Sodium biphenyl High cell voltage Manganese dioxide battery Modified cell chemistry

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Phase-controlled synthesis of thermally stable nitrogen-doped carbon supported iron catalysts for highly efficient Fischer-Tropsch synthesis

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Nano Research 2019年第10期12卷 2568-2575页

作者： Jin Hee Lee Hack-Keun Lee Dong Hyun Chun Hyunkyung Choi Geun bae Rhim Min Hye Youn Heondo jeong Shin Wook Kang Jung-ll Yang Heon Jung Chui Sung Kim Ji Chan park Clean Fuel Laboratory Korea Institute of Energy ResearchDaejeon 34129Republic of Korea Department of Chemical Engineering University of SeoulSeoul 02504Republic of Korea Advanced Energy and System Technology University of Science and TechnologyDaejeon 34113Republic of Korea Department of Physics Kookmin UniversitySeoul 02707Republic of Korea

Iron-based nan oparticles with un iform and high particle dispersi on,which are supported on carb on structures,have been used for various ***,their preparation still suffers from complicated synthesis involving multiple steps and from the high price of precursors and solve *** the prese nt work,a new carbon en capsulated iron-carbide nano particle supported on n itroge rvdoped porous carbon(Fe5C2@C/NPC)structure was *** was made using a simple solid-state reaction with sequential thermal ***5C2@C/NPC is a highly active and stable catalyst for the high-temperature Fischer-Tropsch synthesis *** showed very high hydrocarbon productivity(4.71 gHc gcat^-1·h^-1)with high CO conversions(up to 96%).

关键词： iron-carbide one-pot synthesis nitrogen-doped graphene Fischer-Tropsch synthesis Mdssbauer spectroscopy

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