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中国有色金属学会会刊：英文版 2012年第S3期22卷 745-752页

作者： Seong-jong kim Seong-kweon kim Jae-cheul PARK Division of Marine Engineering Mokpo Maritime University Department of Electronic IT Media Engineering Institue of TechnologySeoul National University of Science and Technology New Growth Technical Support Team Green and Industrial Technology CenterKorean Register of Shipping

To improve the durability of underwater rotating products,the corrosion characteristics in harsh marine environment were evaluated through various electrochemical experiments on the Al2O3-3TiO2 and CoNiCrAlY coating layers by atmospheric pressure plasma spray coating *** evaluating the corrosion resistance of these materials,their applicability to environmentally friendly power generation equipment such as blades of tidal current turbines was *** to the Tafel analysis for micro-areas including the coating layer,the coating/metal interlayer and the base metal,the Al2O3-3TiO2 coating layer and the CoNiCrAlY coating layer show markedly lower corrosion current density than the base *** corrosion current density of the CoNiCrAlY coating layer (9.75316×10-8A/cm2) is about 1.6 times more than that of the Al2O3-3TiO2 coating layer (6.13139×10-8A/cm2).

关键词： Al2O3-3TiO2 coating layer CoNiCrAlY coating layer underwater rotating products marine environment corrosion characteristics atmospheric pressure plasma spray

Surface treatment to improve corrosion resistance of Al plate heat exchangers

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中国有色金属学会会刊：英文版 2009年第B09期19卷 28-31页

作者： jong-Soon kim Tae-Ho KANG In-Kwan kim Department of Mechanical Engineering Pu kyong National University

The correlations between thermal and physical properties were studied through thermal conductivity measurements, hardness tests, salt spray tests (AASS) among the surface treatment samples named K20, K40 with thickness of 20, 40 μm respectively and raw sample named K00. In thermal conductivity measurements, there are little differences among the samples as K00, K20 and K40, they exhibit 153.39, 150.69 and 149.76 W/(m·K), respectively. According to hardness tests, K00, K20 and K40 exhibit 87.9, 259.7 and 344.8 in Vickers values. In the result of salt spray tests to examine the effects on corrosion resistance, K00, K20 and K40 exhibit the grade of 3?5, 2.0?9.8 and 10, respectively. The mutual relation of the above results was analyzed. It is found that the surface treatments do not affect the thermal conductivity of aluminum and result in the improvement of physical properties. As a result of the technology, the surface improvement of aluminum alloy specimen is achieved without thermal degradation. It validates the ability of the aluminum plate heat exchangers with surface treatment to enhance the corrosion resistance. Present work is performed as the first fundamental threshold in the process of aluminum plate heat exchangers development to check out its possibility, therefore the next step-experimental and numerical study of practical aluminum plate heat exchangers will be made.

关键词：板式换热器表面处理耐铝性物理性能导热系数硬度测试盐雾试验耐腐蚀性

Apolipoprotein A-I binding protein-mediated neuroprotection in glaucomatous neuroinflammation and neurodegeneration

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Neural Regeneration Research 2025年第5期20卷 1414-1415页

作者： Sinwoo Hwang Seunghwan Choi Soo-Ho Choi Keun-Young kim Yury I.Miller Won-Kyu Ju Hamilton Glaucoma Center and Shiley Eye Institute The Viterbi Family Department of OphthalmologyUniversity of California San DiegoLa JollaCAUSA Department of Medicine University of California San DiegoLa JollaCAUSA National Center for Microscopy and Imaging Research Department of NeurosciencesUniversity of California San DiegoLa JollaCAUSA

Glaucoma is a multifactorial eye disorder that can cause vision loss and irreversible blindness,affecting individ uals aged 40 to 80 yea rs *** to the aging population,it is expected that the number of people affected by glaucoma will surpass 111 million by 2040 as the disease becomes more *** primarily contributes to optic nerve axon loss and the progressive degeneration of retinal ganglion cells (RGCs),subsequently leading to vision impairment.

关键词： irreversible pass primarily

Laparoscopic surgery for gastric cancer:Current status and future direction

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Chinese Journal of Cancer Research 2021年第2期33卷 133-141页

作者： So Hyun Kang hyung-Ho kim Department of Surgery Seoul National University Bundang HospitalSeongnam 13620Republic of Korea Department of Surgery Seoul National University College of MedicineSeoul 03080Republic of Korea

Gastric cancer is still a major cause of death *** laparoscopic gastrectomy(LG)has gained evidence as a standard treatment for early gastric cancer in the distal stomach,there are still concerns regarding its application for gastric cancer in the upper stomach and advanced gastric ***,LG has shown to have faster recovery,shorter hospital stay,less pain,and less blood loss in many retrospective and prospective *** application of LG has now extended from conventional radical gastrectomy to novel approaches such as function-preserving gastrectomy and sentinel-node navigated *** on the use of laparoscopy in treatment for stage IV gastric cancer are rare,but show that there may be some roles of LG in selected *** the development of new laparoscopic tools that augment human ability,the future of LG should move on from proving non-inferiority to demonstrating superiority compared to the traditional open gastrectomy.

关键词： Laparoscopy stomach neoplasm minimally invasive surgical procedures

Characterization of Deciliation-Regeneration Process of Tetrahymena Pyriformis for Cellular Robot Fabrication

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Journal of Bionic Engineering 2011年第3期8卷 273-279页

作者： Dal hyung kim Sean E. Brigandi Paul kim Doyoung Byun Min Jun kim Department of Mechanical Engineering & Mechanics Drexel University Philadelphia PA 19104 USA Department of Aerospace Information Engineering Konkuk University Seoul 143-701 South Korea

magnetotactic Tetrahymena pyriformis GL （T. pyriformis） cells were created by the internalization of iron oxide nano particles and became controllable with a time-varying external magnetic field. Thus, T. pyriformis can be utilized as a cellular robot to conduct micro-scale tasks such as transportation and manipulation. To complete these tasks, loading inorganic or organic materials onto the cell body is essential, but functionalization of the cell membrane is obstructed by their motile organelles, cilia. Dibucaine HC1, a local anesthetic, removes the cilia from the cell body, and the functional group would be absorbed more efficiently during cilia regeneration. In this paper, we characterize the recovery of artificial magnetotactic T. pyriformis after the deciliation process to optimize a cellular robot fabrication process. After sufficient time to recover, the motility rate and the average velocity of the deciliated cells were six and ten percent lower than that of non-deciliated cells, respectively. We showed that the motile cells after recovery can still be controlled using magnetotaxis, making T. pyrfformis a good candidate to be used as a celIular robot.

关键词： Tetrahymena pyriformis deciliation cellular robot Helmholtz coil magnetic field magnetotaxis

Polydopamine-derived N-doped carbon-wrapped Na3V2(PO4)3 cathode H with superior rate capability and cycling stability for sodium-ion I batteries

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Nano Research 2019年第2期12卷 397-404页

作者： Hyeongwoo kim Hyojun Lim hyung-Seok kim Ki Jae kim Dongjin Byun Wonchang Choi Center for Energy Storage Research Korea Institute of Science and Technology 5 Hwarang-ro 14-gil Seongbuk-gu Seoul 02792 Republic of Korea Department of Material Science and Engineering Korea University 145 Anam-ro Seongbuk-gu Seoul 02841 Republic of Korea Division of Energy & Environment Technology KIST School Korea University of Science and Technology 5 Hwarang-ro 14-gik Seongbuk-gu Seoul 02792 Republic of Korea Department of Energy Engineering Konkuk University 120 Neungdong-ro Gwangin-gu Seoul 05029 Republic of Korea

Na superionic conductor (NASICON)-type Na3V2(PO4)3 (NVP) has been regarded as a promising cathode material for sodium-ion batteries (SIBs). However, NVP suffers from poor cyclability and rate capability because of its intrinsically low electronic conductivity. Herein, we successfully syn thesized N-doped carb on-wrapped Na3V2(PO4)3 (NC@NVP) through the carb on izati on of polydopami ne, which is rich in nitrogen species. The strong adhesion properties of the polydopamine lead to effective and homogeneous wrapping of NVP particles, and it I is further turned into a con ductive N-doped carb on n etwork itself, providi ng facile diffusi on of electr ons and Na+ i ons duri ng battery operation. NC@NVP displays remarkable electrochemical performanee, even under harsh operating conditions, such as a high rate capability (discharge capacity of 70.88, 49.21 mA·h·g^-1 at 50 and 100 C), long-term cycling stability (capacity retention of 94.77% over 1,000 cycles at 20 C), and high-temperature cycling (capacity retention of 92.0% after 500 cycles at 60 ℃).

关键词： polydopamine N-doped carbon Na3V2(PO4)3 cathode sodium-ion batteries

Development of RP-HPLC method for simultaneous determination of docetaxel and curcumin in rat plasma: Validation and stability

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Asian Journal of Pharmaceutical Sciences 2017年第1期12卷 105-113页

作者： Dong Wuk kim Abid Mehmood Yousaf Dong Xun Li jong Oh kim Chul Soon Yong Kwan hyung Cho Han-Gon Choi College of Pharmacy&Institute of Pharmaceutical Science and Technology Hanyang University55 Hanyangdaehak-roSangnok-guAnsan 426-791South Korea Faculty of Pharmacy University of Central Punjab1-Khayaban-e-JinnahJoharLahore54000Pakistan National Pharmaceutical Engineering Centre for Solid Preparation in Chinese Herbal Medicine Jiangxi University of Traditional Chinese Medicine56 Yangming RoadNanchangJiangxi330006China College of Pharmacy Yeungnam University214-1Dae-DongGyongsan 712-749South Korea College of Pharmacy Inje University197Inje-roGimhae621-749South Korea

The purpose of the present research was to develop a suitable, simple, precise, accurate,robust, and reproducible RP-HPLC method for a reliable simultaneous quantification of docetaxel(DTX) and curcumin(CCM) in rat plasma samples using paclitaxel(PTX) as an internal standard. The samples were assayed by the Agilent 1260 Infinity HPLC instrument using a Capcell Pak C8 column(4.6 mm × 150 mm, 5 μm) under isocratic conditions. The mobile phase consisted of acetonitrile and triple distilled water(40/60, v/v) with a flow rate of 1.0 ml/min. The eluent was monitored at 230 nm for simultaneous measurement of curcumin and docetaxel. The method was validated by determining system suitability, selectivity, sensitivity, linearity, inter-day and intra-day precision, accuracy, robustness, and stability in accordance with the guidelines of the United States Food and Drug Administration(FDA).The developed chromatographic method proved to be simple, precise, accurate, robust and reproducible. Moreover, the samples showed stability at room temperature over a period of 48 h. Thus, this method would be employed for routine simultaneous quantification of docetaxel and curcumin in rat plasma samples.

关键词： Curcumin Docetaxel HPLC Plasma-extraction Simultaneous determination Validation

Electrically controlled mRNA delivery using a polypyrrolegraphene oxide hybrid film to promote osteogenic differentiation of human mesenchymal stem cells

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Nano Research 2022年第10期15卷 9253-9263页

作者： Huijung kim Kübra Solak Yoojoong Han Yeon-Woo Cho Kyeong-Mo Koo Chang-Dae kim Zhengtang Luo hyungbin Son hyung-Ryong kim Ahmet Mavi Tae-hyung kim School of Integrative Engineering Chung-Ang University84 Heukseuk-roDongjak-guSeoul 06974Republic of Korea Department of Nanoscience and Nanoengineering Graduate School of Natural and Applied SciencesAtatürk UniversityErzurum 25240Turkey Department of Chemical and Biological Engineering Hong Kong University of Science and TechnologyKowloonHong Kong 999077China Department of Pharmacology College of DentistryJeonbuk National UniversityJeonju 54896Republic of Korea Department of Nanoscience and Nanoengineering Institute of ScienceAtatürk UniversityErzurum 25240Turkey Department of Mathematics and Science Education Education Faculty of Kazım KarabekirAtatürk UniversityErzurum 25240Turkey

Direct messenger ribonucleic acid(mRNA)delivery to target cells or tissues has revolutionized the field of ***,the applicability of regenerative medicine is limited by the technical difficulties of various mRNA-loaded ***,we report a new conductive hybrid film that could guide osteogenic differentiation of human adipose-derived mesenchymal stem cells(hADMSCs)via electrically controlled mRNA *** find optimal electrical conductivity and mRNAloading capacity,the polypyrrole-graphene oxide(PPy-GO)hybrid film was electropolymerized on indium tin oxide *** found that the fluorescein sodium salt,a molecule partially mimicking the physical and chemical properties of mRNAs,can be effectively absorbed and released by electrical stimulation(ES).The hADMSCs cultivated on the PPy-GO hybrid film loaded with pre-osteogenic mRNAs showed the highest osteogenic differentiation under electrical *** platform can load various types of RNAs thus highly promising as a new nucleic acid delivery tool for the development of stem cell-based therapeutics.

关键词： messenger ribonucleic acid(mRNA)delivery polypyrrole graphene oxide electrical release mesenchymal stem cells

VANET Jamming and Adversarial Attack Defense for Autonomous Vehicle Safety

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Computers, Materials & Continua 2022年第5期71卷 3589-3605页

作者： Haeri kim jong-Moon Chung Department of Vehicle Convergence Engineering Yonsei UniversitySeoul03722Korea School of Electrical&Electronic Engineering Yonsei UniversitySeoul03722Korea

The development of Vehicular Ad-hoc Network(VANET)technology is helping Intelligent Transportation System(ITS)services to become a *** can use VANETs to communicate safety messages on the road(while driving)and can inform their location and share road condition information in ***,intentional and unintentional(e.g.,packet/frame collision)wireless signal jamming can occur,which will degrade the quality of communication over the channel,preventing the reception of safety messages,and thereby posing a safety hazard to the vehicle’s *** this paper,VANET jamming detection applying Support Vector Machine(SVM)machine learning technology is used to classify jamming and non-jamming *** analysis is based on two cases which include normal traffic and heavy traffic conditions,where the results show that the probability of packet dropping will increase when many vehicles are using the wireless channel *** using SVM classification,the most appropriate feature set applied in determining a jamming situation shows an accuracy of 98%or ***,more advanced jamming attacks need to be considered for preparation of more reliable and safer autonomous ITS *** research can use vehicular communication transmission and reception data based on selected published *** this paper,an additional adversarial defense algorithm using the Density-Based Spatial Clustering of Applications with Noise(DBSCAN)method is proposed,which assumes that evolutionary attacks of the jammer will attempt to confuse the trained *** simulation results show that applying DBSCAN can improve the accuracy by elimination of outliers before conducting classification testing.

关键词： Vehicle safety VANET jamming SVM adversarial defense

Computing the User Experience via Big Data Analysis:A Case of Uber Services

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Computers, Materials & Continua 2021年第6期67卷 2819-2829页

作者： Jang Hyun kim Dongyan Nan Yerin kim hyung Park Min Department of Interaction Science/Department of Human-Artificial Intelligence Interaction Sungkyunkwan UniversitySeoul03063Korea Department of Applied Artificial Intelligence/Department of Human-Artificial Intelligence Interaction Sungkyunkwan UniversitySeoul03063Korea

As of 2020,the issue of user satisfaction has generated a significant amount of ***,we employ a big data approach for exploring user satisfaction among Uber *** develop a research model of user satisfaction by expanding the list of user experience(UX)elements(i.e.,pragmatic,expectation confirmation,hedonic,and burden)by including more elements,namely:risk,cost,promotion,anxiety,sadness,and ***,we collect 125,768 comments from online reviews of Uber services and perform a sentiment analysis to extract the UX *** results of a regression analysis reveal the following:hedonic,promotion,and pragmatic significantly and positively affect user satisfaction,while burden,cost,and risk have a substantial negative ***,the influence of expectation confirmation on user satisfaction is not ***,sadness,anxiety,and anger are positively related to the perceived risk of *** with sadness and anxiety,anger has a more important role in increasing the perceived burden of *** on these findings,we also provide some theoretical implications for future UX literature and some core suggestions related to establishing strategies for Uber and similar *** proposed big data approach may be utilized in other UX studies in the future.

关键词： User satisfaction user experience big data sentiment analysis Uber