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Simulation of the extreme waves generated by typhoon Bolaven (1215) in the East China Sea and Yellow Sea

Acta Oceanologica Sinica 2015年第12期34卷 19-28页

作者： JUN Ki Cheon jeONG Weon Mu CHOI Jin Yong park Kwang Soon JUNG kyung Tae KIM Mee kyung CHAE Jang Won QIAO Fangli Coastal Disaster Research Center Korea Institute of Ocean Science and Technology Coastal & Environmental Engineering Division Korea Institute of Ocean Science and Technology Marine Radionuclide Research Center Korea Institute of Ocean Science and Technology First Institute of Oceanography State Oceanic Administration

Record-breaking high waves occurred during the passage of the typhoon Bolaven（1215）（TYB） in the East China Sea（ECS） and Yellow Sea（YS） although its intensity did not reach the level of a super *** and directional wave measurements were made using a range of in-situ instruments mounted on an ocean tower and *** order to understand how such high waves with long duration occurred,analyses have been made through measurement and numerical *** winds were generated using the TC96 typhoon wind model with the best track data calibrated with the *** then the wind fields were blended with the reanalyzed synoptic-scale wind fields for a wave *** fields were simulated using WAM4.5 with adjustment of C_d for gust of winds and bottom friction for the study *** the accuracy of simulations is considerably enhanced,and the computed results are also in better agreement with measured data than *** is found that the extremely high waves evolved as a result of the superposition of distant large swells and high wind seas generated by strong winds from the front/right quadrant of the typhoon *** the typhoon moved at a speed a little slower than the dominant wave group velocity in a consistent direction for two days,the wave growth was significantly enhanced by strong wind input in an extended fetch and non-linear interaction.

关键词： extreme waves typhoon measurements numerical simulation East China Sea

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Identification of novel HLA-A 0201-restricted epitopes from anterior gradient-2 as a tumor-associated antigen against colorectal cancer

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Cellular & Molecular Immunology 2012年第2期9卷 175-183页

作者： Hyun Ju Lee Cheol Yi Hong Chun-Ji Jin Mi-Hyun Kim Youn-kyung Lee Thanh-Nhan Nguyen-Pham Hyunah Lee Byoung Chul park Ik-Joo Chung Hyeoung-Joon Kim je-Jung Lee Research Center for Cancer Immunotherapy Chonnam National University Hwasun Hospital Hwasun Jeollanamdo Korea Department of Hematology-Oncology Chonnam National University Gwangju Korea VaxcelI-Bio Therapeutics Hwasun Jeollanamdo Korea Samsung Medical Center Sungkyunkwan University School of Medicine Seoul Korea Korea Research Institute of Bioscience and Biotechnology （KRIBB） Daejeon Korea The Brain Korea 21 Project Center for Biomedical Human Resources at Chonnam National University Gwangiu Korea

Anterior gradient-2 （AGR2） promotes tumor growth, cell migration and cellular transformation and its enhanced expression is almost completely restricted to malignant tissues, thus making AGR2 an interesting target for the development of immunotherapeutic strategies. We investigated whether the AGR2 molecule comprises human leukocyte antigen （HLA）-A 0201-binding epitopes recognized by human cytotoxic T lymphocytes （CTLs）, which could be targeted in dendritic cell （DC）-based cancer immunotherapy against colorectal cancer （CRC）. We reviewed the sequence of AGR2 for peptides that could potentially bind to HLA-A 0201 with the aid of a computer-based program. Five candidate peptides with different binding scores were synthesized and tested. These peptides were then assessed for their immunogenicity to elicit specific immune responses mediated by CTLs in vitro by means of enzyme-linked immunospot assays and CTL assays. AGR2 was highly expressed in several CRC cell lines, including DK01, DLD1, KM 12C, HCT-8 and HT-29. DCs pulsed with AGR2-P2 （aa 11-19; LLVALSYTL） or AGR2-P4 （aa 127-135; RIMFVDPSL） generated potent CTLs that could lyse T2 cells pulsed with AGR2-P2 or AGR2-P4 and HLA-A0201＋ AGR2-positive CRC cell lines in a strong dose-dependent and HLA-A 0201-restricted manner. In conclusion, these novel epitopes derived from AGR2 protein may be attractive candidates for DC-based immunotherapy for CRC.

关键词： AGR2 colorectal cancer dendritic cell tumor-associated antigen

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Structurally engineered colloidal quantum dot phosphor using TiO_(2) photonic crystal backbone

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Light(Science & Applications) 2022年第11期11卷 2782-2789页

作者： Hansol Lee Tae-Yun Lee Yeonsang park kyung-Sang Cho Young-Geun Rho Hyuck Choo Heonsu jeon Department of Physics and Astronomy Seoul National UniversitySeoul 08826Republic of Korea Inter-university Semiconductor Research Center Seoul National UniversitySeoul 08826Republic of Korea Department of Physics Chungnam National UniversityDaejeon 34134Republic of Korea Institute of Quantum Systems Chungnam National UniversityDaejeon 34134Republic of Korea Samsung Advanced Institute of Technology Suwon 16678Republic of Korea Institute of Applied Physics Seoul National UniversitySeoul 08826Republic of Korea

Photonic crystal(PhC)phosphor,in which the phosphor material is periodically modulated for an enhancement in color-conversion efficiency via resonant absorption of excitation photons,is a paradigm-shifting structural phosphor ***-dimensional(2D)square-lattice PhC phosphor is currently considered the most advanced platform because of not only its high efficiency,but also its immunity to excitation *** the present study,two major modifications are made to further improve the performance of the 2D PhC phosphor:increasing the refractive index contrast and planarizing the *** index contrast is improved by replacing the PhC backbone material with TiO_(2)whereas the surface planarization is achieved by removing excessive colloidal quantum dots from the *** comparison with the reference phosphor,the upgraded PhC phosphor exhibits~59 times enhanced absorption(in simulations)and~7 times enhanced emission(in experiments),both of which are unprecedentedly *** results not only brighten the viability and applicability of the PhC phosphor but also spur the phosphor development through structural engineering of phosphor materials.

关键词： immunity phosphor backbone

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ELK3-ID4 axis governs the metastatic features of triple negative breast cancer

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Oncology Research 2024年第1期32卷 127-138页

作者： JIN-HO CHOI JOO DONG park SEUNG HEE CHOI EUN-SU KO HYE JUNG JANG kyung-SOON park Department of Biomedical Science CHA UniversitySeongnamKorea

Purpose:Cancer cell metastasis is a multistep process,and the mechanism underlying extravasation remains ***3 is a transcription factor that plays a crucial role in regulating various cellular processes,including cancer *** on the finding that ELK3 promotes the metastasis of triple-negative breast cancer(TNBC),we investigated whether ELK3 regulates the extravasation of TNBC by forming the ELK3-ID4 ***4 functions as a transcriptional regulator that interacts with other transcription factors,inhibiting their activity and subsequently influencing various biological processes associated with cell differentiation,survival,growth,and ***:We assessed the correlation between the expression of ELK3 and that of ID4 in TNBCs using bioinformatics analyses,QRT-PCR,western blot analysis,luciferase reporter assays,and chromatin ***,adhesion,invasion,and lung metastasis assays were employed to determine whether the ELK3-ID4 axis regulates the metastatic features of ***:We found that ELK3 binds directly to a binding motif close to the ID4 promoter to repress promoter *** expression of E-cadherin in TNBC was regulated by the ELK3-ID4 *** vitro and in vivo analyses showed that inhibiting ID4 expression in ELK3-knockdown MDA-MB-231(ELK3KD)cells restored the ability to extravasate and ***:The results indicate that the ELK3 regulates ID4 promoter activity,and that the ELK3-ID4 axis regulates the metastatic characteristics of TNBC ***,the data suggest that the ELK3-ID4 axis regulates metastasis of TNBCs by modulating expression of E-cadherin.

关键词： E-cadherin Extravasation Colonization

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EXPERIMENTAL ESTIMATION OF A SCALING EXPONENT FOR TIP VORTEX CAVITATION VIA ITS INCEPTION TEST IN FULL-AND MODEL-SHIP

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Journal of Hydrodynamics 2012年第5期24卷 658-667页

作者： LEE jeung-Hoon JUNG Jae-Kwon LEE kyung-Jun HAN Jae-Moon park Hyung-Gil SEO Jong-Soo Samsung Ship Model Basin(SSMB) Marine Research InstituteSamsung Heavy IndustriesScience TownDaejeon 305-380Korea

Tip vortex cavitation noise of marine propeller became primary concems to reduce hazardous environmental impacts from commercial ship or to keep the underwater surveillance of naval ships. The investigations of the tip vortex and its induced noise are normally conducted through the model test in a water cavitation tunnel. However the Reynolds number of model-test is much smaller than that of the full-scale, which subsequently results in the difference of tip vortex cavitation inception. Hence, the scaling law between model- and full-scales needs to be identified prior to the prediction and assessment of propeller noise in full scale. From previous researches, it is generally known that the incipient caivtation number of tip vortex can be represented as a power of the Reynolds number. However, the power exponent for scaling, which is the main focus of this research, has not been clearly studied yet. This paper deals with the estimation of scaling exponent based on tip vortex cavitation inception test in both full- and model-scale ships. Acoustical measurements as well as several kind of signal processing technique for an inception criterion suggest the scaling exponent as 0.30. The scaling value proposed in this study shows slight difference to the one of most recent research. Besides, extrapolation of model-ship noise measurement using the proposed one predicts the full-scale noise measurement with an acceptable discrepancy.

关键词： tip vortex cavitation underwater radiated noise scaling exponent

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Rational strategy for power doubling of monolithic multijunction III-V photovoltaics by accommodating attachable scattering waveguides

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Light(Science & Applications) 2024年第11期13卷 2734-2744页

作者： Shin Hyung Lee Hyo Jin Kim Jae-Hyun Kim Gwang Yeol park Sun-kyung Kim Sung-Min Lee School of Electrical Engineering Korea Advanced Institute of Science and Technology(KAIST)Daejeon 34141Republic of Korea Optoelectronic Convergence Research Center Korea Photonics Technology InstituteGwangju 61007Republic of Korea Department of Applied Physics Kyung Hee UniversityYongin 17104Republic of Korea Department of Electrical Engineering Hanyang UniversitySeoul 04763Republic of Korea Division of Materials Science and Engineering Hanyang UniversitySeoul 04763Republic of Korea

While waveguide-based light concentrators offer significant advantages,their application has not been considered an interesting option for assisting multijunction or other two-terminal tandem solar *** this study,we present a simple yet effective approach to enhancing the output power of transfer-printed multijunction InGaP/GaAs solar *** utilizing a simply combinable waveguide concentrator featuring a coplanar waveguide with BaSO4 Mie scattering elements,we enable the simultaneous absorption of directly illuminated solar flux and indirectly waveguided *** deployment of cells is optimized for front-surface photon collection in monofacial *** systematic comparisons across various waveguide parameters,supported by both experimental and theoretical quantifications,we demonstrate a remarkable improvement in the maximum output power of a 26%-efficient cell,achieving an enhancement of~93%with the integration of the optimal scattering ***,a series of supplementary tests are conducted to explore the effective waveguide size,validate enhancements in arrayed cell module performance,and assess the drawbacks associated with rear *** findings provide a comprehensive understanding of our proposed approach towards advancing multi-junction photovoltaics.

关键词： waveguide scattering power

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Research on flexible display at Ulsan National Institute of Science and Technology

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npj Flexible Electronics 2017年第1期1卷 47-59页

作者： Jihun park Sanghyun Heo Kibog park Myoung Hoon Song Ju-Young Kim Gyouhyung kyung Rodney Scott Ruoff Jang-Ung park Franklin Bien School of Materials Science and Engineering Ulsan National Institute of Science and Technology(UNIST)Ulsan Metropolitan City 44919Republic of Korea School of Electrical and Computer Engineering Ulsan National Institute of Science and Technology(UNIST)Ulsan Metropolitan City 44919Republic of Korea Department of Physics Ulsan National Institute of Science and Technology(UNIST)Ulsan Metropolitan City 44919Republic of Korea School of Design and Human Engineering Ulsan National Institute of Science and Technology(UNIST)Ulsan Metropolitan City 44919Republic of Korea Center for Multidimensional Carbon Materials Institute for Basic Science(IBS)Ulsan 44919Republic of Korea Department of Chemistry Ulsan National Institute of Science and Technology(UNIST)Ulsan 44919Republic of Korea

Displays represent information visually,so they have become the fundamental building block to visualize the data of current electronics including ***,electronics have been advanced toward flexible and wearable electronics that can be bent,folded,or stretched while maintaining their performance under various ***,recent advances in research to demonstrate flexible and wearable displays are *** introduce these results by dividing them into several categories according to the components of the display:active-matrix backplane,touch screen panel,light sources,integrated circuit for fingerprint touch screen panel,and characterization tests;and we also present mechanical tests in nano-meter scale and visual ergonomics research.

关键词： dividing electronics panel

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Electrochemically metal-doped reduced graphene oxide films:Properties and applications

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Journal of Materials Science & Technology 2020年第5期40卷 72-80页

作者： Myung-Sic Chae Tae Ho Lee kyung Rock Son Tae Hoon park Kyo Seon Hwang Tae Geun Kim School of Electrical Engineering Korea UniversityAnam-ro 145Seongbuk-guSeoul 02841South Korea Department of Clinical Pharmacology and Therapeutics College of MedicineKyung Hee UniversitySeoul 02447South Korea

The fine control of doping levels in graphene materials such as reduced graphene oxide(RGO)is important to properly manipulate their ambipolar transport characteristics for various device ***,conventional doping methods involve complex chemical reactions,large-scale doping processes,and poor ***,a simple and controllable electrochemical doping treatment(EDT),performed via the conductive channels created at the RGO surface by the application of an electric field,is introduced to tailor the electrical properties of RGO films.X-ray photoelectron spectroscopy and Raman spectroscopy measurements are performed to detect the presence of Ni atoms in RGO films after the EDT(EDT-RGO).Then,EDT-RGO field-effect transistors(FETs)are fabricated with different doping areas(0 to 100%fractional area)on the RGO active channel to investigate the effect and selective-area doping capability of the *** to p-type doping compensation by the intercalated Ni atoms,the electron mobility of the EDT-RGO FET decreases from 1.40 to 0.12 cm2 V-1s-1 compared with that of the undoped RGO-FET,leading to the conversion from ambipolar to unipolar p-type transfer characteristics.

关键词： Reduced graphene oxide Electrochemical doping treatment Electrical breakdown process Field-effect transistor

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Promoter hypomethylation and reactivation of MAGE-A1 and MAGE-A3 genes in colorectal cancer cell lines and cancer tissues

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World Journal of Gastroenterology 2006年第35期12卷 5651-5657页

作者： kyung-Hee Kim Jin-Sung Choi Il-Jin Kim Ja-Lok Ku Jae-Gahb park Laboratory of Cell Biology Korean Cell Line Bank Cancer Research Institute Seoul National University College of Medicine Seoul 110-744 Korea Laboratory of Cell Biology Korean Cell Line Bank Cancer Research Institute Seoul National University College of Medicine Seoul 110-744

AIM： To verify the expression and methylation status of the MAGE-A1 and MAGE-A3 genes in colorectal cancer tissues and cancer cell lines. METHODS： We evaluated promoter demethylation status of the MAGE-A1 and MAGE-A3 genes by RT-PCR analysis and methylation-specific PCR （MS-PCR）, as well as sequencing analysis, after sodium bisulfite modification in 32 colorectal cancer cell lines and 87 cancer tissues. RESULTS： Of the 32 cell lines, MAGE-A1 and MAGE-A3 expressions were observed in 59% and 66%, respectively. Subsequent to sodium bisulfite modification and MSPCR analysis, the promoter hypomethylation of MAGE-A1 and MAGE-A3 was confirmed in both at 81% each. Promoter hypomethylation of MAGE-A1 and MAGE-A3 in colorectal cancer tissues was observed in 43% and 77%, respectively. Hypomethylation of MAGE-A1 and MAGE-A3 genes in corresponding normal tissues were observed in 2% and 6%, respectively. CONCLUSION： The promoter hypomethylation of MAGE genes up-regulates its expression in colorectal carcinomas as well as in gastric cancers and might play a significant role in the development and progression of human colorectal carcinomas.

关键词： MAGE-A1 MAGE-A3 Promoter Hypomethylation Colorectal cancer

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Inhibitory effects of polysaccharides isolated from Phellinus gilvus on benzo(a)pyrene-induced forestomach carcinogenesis in mice

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World Journal of Gastroenterology 2005年第4期11卷 577-579页

作者： Jae-Sung Bae Kwang-Ho Jang Hyunee Yim Seung-Chun park Hee-kyung Jin College of Veterinary Medicine kyungpook National University Daegu 702-701 Republic of Korea Department of Pathology Ajou University School of Medicine Suwon Republic of Korea

AIM: Although polysaccharides from Phellinus mushrooms are a well-known material with anti-tumor properties, there is no information about the effect of polysaccharides from Phellinus gilvus (PG) on tumor. The modulating effect of polysaccharides isolated from PG on the benzo(a)pyrene (BaP)-induced forestomach carcinogenesis in ICR female mice was investigated in this ***: A forestomach carcinogenesis model was established in 40 ICR female mice receiving oral administration of BaP for 4 wk. The mice were randomly assigned to 4 groups (10 each). The mice in each group were treated with sterile water or PG for 4 and 8 wk (SW4,PGW4, SW8, and PGW8 groups). Eight or 12 wk after the first dose of BaP, forestomachs were removed for histopathological and RT-PCR ***: In histopathological changes and RT-PCR analysis, sterile water-treated mice showed significant hyperplasia of the gastric mucosa with a significantly increased expression of mutant p53 mRNA compared to mice treated with PG for 8 ***: Polysaccharides isolated from PG may inhibit BaP-induced forestomach carcinogenesis in mice bydown-regulating mutant p53 expression.

关键词： Forestomach carcinogenesis Phellinus gilvus Polysaccharides p53 Gene

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