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Apocrine hidrocystoma of the conjunctiva

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International Journal of Ophthalmology(English edition) 2012年第2期5卷 247-248页

作者： Boyun kim nam Yeo Kang Department of Ophthalmology Bucheon St. Mary's Hospital College of Medicine The Catholic University of Korea Bucheon Kyunggi-do 420-717 Korea

Dear Sir, I am Dr. Boyun kim, form the Department of Ophthalmology, Bucheon St. Mary’s Hospital, Bucheon, Korea. I write to present a case report of apocrine hidrocystoma on temporal bulbar conjunctiva. Apocrine hidrocystoma (AH) is a benign cutaneous cystic nodule arising from apocrine glands of Moll [1]. This lesion usually occurs on eyelids and canthus [1,2], ears, chest, shoulders in adults but its occurrence in conjunctiva [3] is

关键词： Figure Apocrine hidrocystoma of the conjunctiva

An estimation of vehicle kilometer traveled and on-road emissions using the traffic volume and travel speed on road links in Incheon City

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Journal of Environmental Sciences 2017年第4期29卷 90-100页

作者： Sungwoon Jung Jounghwa kim Jeongsoo kim Dahee hong Dongjoo Park Transportation Pollution Research Center National Institute of Environmental Research Center for Korea Transport Database The Korea Transport Institute Department of Transportation Engineering University of Seoul

The objective of this study is to estimate the vehicle kilometer traveled（VKT） and on-road emissions using the traffic volume in urban. We estimated two VKT; one is based on registered vehicles and the other is based on traffic volumes. VKT for registered vehicles was 2.11 times greater than that of the applied traffic volumes because each VKT estimation method is different. Therefore, we had to define the inner VKT is moved VKT inner in urban to compare two values. Also, we focused on freight modes because these are discharged much air pollutant emissions. From analysis results, we found middle and large trucks registered in other regions traveled to target city in order to carry freight, target city has included many industrial and logistics areas. Freight is transferred through the harbors,large logistics centers, or via locations before being moved to the final destination. During this process, most freight is moved by middle and large trucks, and trailers rather than small trucks for freight import and export. Therefore, these trucks from other areas are inflow more than registered vehicles. Most emissions from diesel trucks had been overestimated in comparison to VKT from applied traffic volumes in target city. From these findings, VKT is essential based on traffic volume and travel speed on road links in order to estimate accurately the emissions of diesel trucks in target city. Our findings support the estimation of the effect of on-road emissions on urban air quality in Korea.

关键词： Vehicle kilometer traveled On-road emissions Traffic volume Travel speed Diesel trucks

Genetic-Based Keyword Matching DBSCAN in IoT for Discovering Adjacent Clusters

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Computer Modeling in Engineering & Sciences 2023年第5期135卷 1275-1294页

作者： Byoungwook kim hong-Jun Jang Department of Computer Engineering Dongshin UniversityNaju58245Korea Department of Computer Science and Engineering Jeonju UniversityJeonju55069Korea

As location information of numerous Internet of Thing(IoT)devices can be recognized through IoT sensor technology,the need for technology to efficiently analyze spatial data is *** of the famous algorithms for classifying dense data into one cluster is Density-Based Spatial Clustering of Applications with Noise(DBSCAN).Existing DBSCAN research focuses on efficiently finding clusters in numeric data or categorical *** this paper,we propose the novel problem of discovering a set of adjacent clusters among the cluster results derived for each keyword in the keyword-based DBSCAN *** existing DBSCAN algorithm has a problem in that it is necessary to calculate the number of all cases in order to find adjacent clusters among clusters derived as a result of the *** solve this problem,we developed the Genetic algorithm-based Keyword Matching DBSCAN(GKM-DBSCAN)algorithm to which the genetic algorithm was applied to discover the set of adjacent clusters among the cluster results derived for each *** order to improve the performance of GKM-DBSCAN,we improved the general genetic algorithm by performing a genetic operation in *** conducted extensive experiments on both real and synthetic datasets to show the effectiveness of GKM-DBSCAN than the brute-force *** experimental results show that GKM-DBSCAN outperforms the brute-force method by up to 21 ***-DBSCAN with the index number binarization(INB)is 1.8 times faster than GKM-DBSCAN with the cluster number binarization(CNB).

关键词： Spatial clustering DBSCAN algorithm genetic algorithm textual information

Delayed-onset micrococcus luteus-induced postoperative endophthalmitis several months after cataract surgery:A case report

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世界临床病例杂志 2023年第27期11卷 6592-6596页

作者： Ki-Yup nam hong-Won Lee Department of Ophthalmology Chungnam National UniversityCollege of MedicineDaejeon 35015South Korea Department of Ophthalmology Chungnam National University HospitalDaejeon 35015South Korea

BACKGROUND Micrococcus luteus(***)-induced endophthalmitis is very rare and and may present as either acute or chronic postoperative *** aim of this study was to report a case of delayed-onset ***-induced endophthalmitis that occurred several months after cataract *** SUMMARY A 78-year-old man presented with decreased vision,pain and redness in the right eye that had begun 3 days *** had undergone cataract surgery 4 mo *** acuity was counting fingers;slit-lamp examination revealed conjunctival injection,posterior corneal precipitates,anterior chamber inflammation(cell 4+),and *** examination revealed moderate vitreous *** vitrectomy was performed for suspected infectious endophthalmitis,followed by vitreous irrigation with injections of *** the postoperative day 1,anterior chamber cell decreased to 2+and hypopyon was not observed on slit lamp *** days postoperatively,the patient had recurrent eye pain,and the anterior chamber cell grade increased to 4+;hypopyon recurred in the anterior chamber,and whitish plaque was observed in the lens ***,the patient underwent intraocular lens(IOL)and lens capsule removal,followed by vitreous irrigation,antibiotics injection,and *** was identified from a lens capsule *** In cases of delayed-onset ***-induced endophthalmitis,early vitrectomy and removal of the IOL and lens capsule may be necessary.

关键词： Micrococcus luteus Chronic endophthalmitis Postoperative endophthalmitis Case report

Late Pleistocene spore-pollen record and climatic change at the Chongphadae Cave Site,Democratic People's Republic of Korea

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Journal of Palaeogeography 2023年第4期12卷 624-636页

作者： Se Chan kim Rye Sun Choe Il nam kim Chol U Ryong Il Kang Institute of Human Evolution and Development History Faculty of HistoryKim Il Sung UniversityTaesong DistrictPyongyangDemocratic People's Republic of Korea

We present a detailed pollen record and interpretations of late Pleistocene climatic change at the Chongphadae Cave Site, Democratic People's Republic of Korea. The mean annual paleotemperature and mean annual paleoprecipitation of the site were calculated using the temperature index and precipitation index based on ecological features and geographical distribution of each taxon. Temperature index and precipitation index range from 8.8℃ to 10.4℃ and from 805.0 mm to 963.1 mm, respectively. Four dates(radiocarbon, uranium series, fission track, and paleomagnetic excursion dating) of the deposit profile investigated yield a range of ~21.3 ka BP to ~117 ka BP, geochronologically corresponding to the late Pleistocene, and extend from the last interglacial highstand through the Last Glacial Maximum. Our results are thus consistent with the climatic shift from interglacial to glacial conditions, provide evidence that the environments of the region, which was reconstructed from the paleoclimatic index, changed from a mild and humid to a cool and dry climate during the late Pleistocene, and suggest trends similar to those of several parts of the Northern Hemisphere which lie in the same latitudinal zone as our study area.

关键词： Chongphadae cave Pollen Climatic change Late Pleistocene Mean annual temperature Mean annual precipitation

Prediction models for recurrence in patients with small bowel bleeding

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World Journal of Clinical Cases 2023年第17期11卷 3949-3957页

作者： Ji Hyun kim Seung-Joo nam Division of Gastroenterology and Hepatology Department of Internal MedicineKangwon National University School of MedicineChuncheon 24341South Korea

Obscure gastrointestinal bleeding(OGIB)has traditionally been defined as gastrointestinal bleeding whose source remains unidentified after bidirectional *** can present as overt bleeding or occult bleeding,and small bowel lesions are the most common *** small bowel can be evaluated using capsule endoscopy,device-assisted enteroscopy,computed tomography enterography,or magnetic resonance *** the cause of smallbowel bleeding is identified and targeted therapeutic intervention is completed,the patient can be managed with routine ***,diagnostic tests may produce negative results,and some patients with small bowel bleeding,regardless of diagnostic findings,may experience *** those at risk of rebleeding can help clinicians form individualized surveillance *** studies have identified different factors associated with rebleeding,and a limited number of studies have attempted to create prediction models for *** article describes prediction models developed so far for identifying patients with OGIB who are at greater risk of *** models may aid clinicians in forming tailored patient management and surveillance.

关键词： Obscure gastrointestinal bleeding Prediction model Rebleeding Small bowel bleeding Video capsule endoscopy

High-damping and conducting epoxy nanocomposite using both zinc oxide particles and carbon nanofibers

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Journal of Materiomics 2018年第3期4卷 187-193页

作者： Jae-Soon Jang Gyo Woo Lee Hyung-ick kim Sung Yong hong Lijie Ci Jae-Do nam Jonghwan Suhr Simulation Group Battery R&D CenterSAMSUNG SDI CO.LTDSamsung-RoYeongtong-GuSuwon-SiGyeonggi-DoSouth Korea Division of Mechanical Design Engineering Chonbuk National UniversityJeonju561-756South Korea Dongnam Regional Division Korea Institute of Industrial TechnologyJinju 52845South Korea Department of Polymer Science and Engineering Sungkyunkwan University2066SeoburoJangan-guGyeonggi-doSouth Korea School of Materials Science&Engineering Shandong UniversityChina School of Mechanical Engineering Sungkyunkwan University2066SeoburoJangan-guGyeonggi-doSouth Korea Department of Energy Science Sungkyunkwan University2066SeoburoJangan-guGyeonggi-doSouth Korea

In this study,high-damping and conducting epoxy nanocomposites were developed with carbon nanofibers as conducting materials,and zinc oxide particles as piezoelectric *** mechanical and electrical properties,electrical impedance,and loss factors were investigated by uniaxial tensile tests,voltage measurement,impedance measurement,and 3-point bending *** percolation thresholds were found:the percolation threshold of resistivity due to the carbon nanofibers forming conductive networks in the matrix;and the impedance threshold due to the zinc oxide particles acting like electric barriers.A poling treatment of the high-damping and conducting epoxy nanocomposite was considered,and we found that poling treatment helped to make the networks more conductive and to generate voltage from ZnO particles.A high-damping and conducting epoxy nanocomposite with 3 wt%CNF and 10 wt%ZnO exhibited higher loss factor than those of others tested.

关键词： Damping Piezoelectric materials Impedance Poling treatment Loss factor

Ni Single Atoms and Ni Phosphate Clusters Synergistically Triggered Surface-Functionalized MoS_(2)Nanosheets for High-performance Freshwater and Seawater Electrolysis

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Energy & Environmental Materials 2022年第4期5卷 1340-1349页

作者： Min Sung kim Duy Thanh Tran Thanh Hai Nguyen Van An Dinh nam Hoon kim Joong Hee Lee Department of Nano Convergence Engineering Jeonbuk National UniversityJeonju 54896Republic of Korea Department of Precision Engineering Graduate School of EngineeringOsaka University2-1Yamada-okaSuita 565-0871Japan Carbon Composite Research Center Department of Polymer-Nanoscience and TechnologyJeonbuk National UniversityJeonju 54896Republic of Korea

Two-dimensional metal dichalcogenides have been evidenced as potential electrocatalysts for hydrogen evolution reaction(HER);however,their application is limited by a poor oxygen evolution reaction(OER)activity due to insufficient number/types of multi-integrated active *** this study,we report a novel bifunctional catalyst developed by simultaneous engineering of single nickel atoms(Ni_(SA)) and nickel phosphate clusters(Ni_(Pi)) to synergistically trigger surface-functionalized MoS_(2) nanosheets(NSs)resulting in high reactivities for both HER and *** Ni_(SA)-Ni_(Pi)/MoS_(2)NSs material exhibits a fairly Pt-like HER behavior with an overpotential of 94.0 mV and a small OER overpotential of 314.0 mV to reach 10 mA cm^(-2) in freshwater containing 1.0 M *** results of the catalyst are well supported by theoretical study,which reveals the significant modulation of electronic structure and enrichment of electroactive site number/types with their reasonably adjusted free adsorption *** evaluating practicability,the Ni_(SA)-Ni_(Pi)/MoS_(2)NSs-based electrolyzer delivers effective operation voltage of 1.62,1.52,and 1.66 V at 10 mA cm^(-2) and superior long-term stability as compared to Pt/C//RuO_(2) system in freshwater,mimic seawater,and natural seawater,*** present study indicates that the catalyst is a promising candidate for the practical production of green hydrogen via water electrolysis.

关键词： bifunctional electrocatalyst freshwater and seawater electrolysis nickel phosphate clusters nickel single atoms surface-functionalized-MoS_(2)nanosheets

Ruled Real Hypersurfaces of A Complex Space Form

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Acta Mathematica Sinica,English Series 1994年第4期10卷 401-409页

作者： Ki, U-Hang kim, nam-Gil Department of Mathematics Kyungpook University Taegu Korea Department of Mathematics Chosun University Kwangju Korea

The purpose of this paper is to define a ruled real hypersurface of a complex space form M_n(c),c≠0,and to give characterizations of this hypersurface by the infinitesimal affine transformation of the structure vecto... 详细信息

关键词： Math real Ruled Real Hypersurfaces of A Complex Space Form