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cO_2 exchange at air-sea interface in the Huanghai Sea

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Acta Oceanologica Sinica 2000年第1期19卷 79-89页

作者： Dong-chan Oh Mi-kyung Park kyung-Ryul Kim (1. Department of Oceanography, Seoul National University, Seoul 151-742, Korea) Department of Oceanography Seoul National University Seoul 151-742 South Korea

During the Huanghai Sea circulation and Material Flux Expedition in Spring 1996, fco_2 in surface water and atmosphere was measured. The fco2 in surface water varied in a range from 220 to 360 uatm1) while atmospheric concentration was nearly constant at 360μatm, showing that the Huanghai Sea surface waters were undersaturated with respect to atmospheric co during the time of investigation. A model was developed in this study in order to estimate the co flux at the air-sea interface. The model incorporates the time-series variations of the distributions in SST (sea surface temperature), salinity, mixed-layer depth, atmospheric fco2, gas-transfer velocity, and cZcS chlorophyll concentration in the Huanghai Sea and was calibrated with the observed fco2 data. The primary parameter affecting fco2 in surface water is the variation of SST through time. The annual fluxes of co are estimated as 0. 033 Gt c from the sea into the atmosphere and 0. 044 Gt c from the air into sea. The Huanghai Sea, thus behaves as a cO2 sink absorbing 0. 011 Gi c of cO2 a year. *** to about 0. 5 % of global oceanic absorption capacity.

关键词： Huanghai Sea cO2 exchange air-sea interface

An Efficient character-Level Adversarial Attack Inspired by Textual Variations in Online Social Media Platforms

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computer Systems Science & Engineering 2023年第12期47卷 2869-2894页

作者： Jebran Khan Kashif Ahmad kyung-Ah Sohn Department of Artificial Intelligence Ajou UniversitySuwonKorea Department of computer Science Munster Technological UniversityCorkIreland Department of Software and computer Engineering Ajou UniversitySuwonKorea

In recent years,the growing popularity of social media platforms has led to several interesting natural language processing(NLP)***,these social media-based NLP applications are subject to different types of adversarial attacks due to the vulnerabilities of machine learning(ML)and NLP *** work presents a new low-level adversarial attack recipe inspired by textual variations in online social media *** variations are generated to convey the message using out-of-vocabulary words based on visual and phonetic similarities of characters and words in the shortest possible *** intuition of the proposed scheme is to generate adversarial examples influenced by human cognition in text generation on social media platforms while preserving human robustness in text understanding with the fewest possible *** intentional textual variations introduced by users in online communication motivate us to replicate such trends in attacking text to see the effects of such widely used textual variations on the deep learning *** this work,the four most commonly used textual variations are chosen to generate adversarial ***,this article introduced a word importance ranking-based beam search algorithm as a searching method for the best possible perturbation *** effectiveness of the proposed adversarial attacks has been demonstrated on four benchmark datasets in an extensive experimental setup.

关键词： Adversarial attack text classification social media character-level attack phonetic similarity visual similarity word importance rank beam search

Bioinspired Multi-material Polyjet-printed Frog Robot for Synchronous and Asynchronous Swimming

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Journal of Bionic Engineering 2023年第3期20卷 923-933页

作者： Afaque Manzoor Soomro Jae-Wook Lee Fida Hussain Memon Faheem Ahmed Kashif Hussain kyung Hyun choi Department of Mechatronics Engineering Jeju National UniversityJeju63243South Korea Department of Electrical Engineering Sukkur IBA UniversitySukkur65200Pakistan

This paper proposes the bioinspired soft frog robot. All printing technology was used for the fabrication of the robot. Polyjet printing was used to print the front and back limbs, while ultrathin filament was used to print the body of the robot, which makes it a complete soft swimming robot. Dual thrust generation approach has been proposed by embedding the main muscle and antagonistic muscle in all the limbs, which enables it to attain high speed (18 mm/s), significant control to swim in dual mode (synchronous and asynchronous modes). To achieve the swimming motion of frog, four SMA (BMF 300) muscle wires were used. The frog robot is named as (FROBOT). The hind limbs are 60 mm long and 10 mm thick on average, while the front limbs are 35 mm long and 7 mm thick. Model-based design and rigorous analysis of the dynamics of real frogs have allowed FROBOT to be developed to swim at a level that is remarkably consistent with real frogs. Electrical and mechanical characteristics have been performed. In addition, the test data were further processed using TRAcKER to analyze angle, displacement and velocity. FROBOT (weighs 65 g) can swim at different controllable frequencies (0.5–2 Hz), can rotate in any direction on command from custom built LabVIEW software allowing it to swim with speed up to 18 mm/s on deep water surface (100 cm) with excellent weight balance.

关键词： Bioinspired Soft robotics Frog FROBOT Asynchronous swimming

Selective Solid-phase Extraction of Aloe Emodin from Aloe by Molecularly Imprinted Polymers

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chemical Research in chinese Universities 2013年第4期29卷 663-666页

作者： TIAN Ming-lei LEE Yu-ri PARK Dong-wha ROW kyung-ho college of chemistry and Environmental Engineering Yangtze University Jingzhou 434023 P R. China Department of chemical Engineering Regional Innovation center for Environmental Technology of Thermal Plasma Inha University Ineheon 402-751 Korea

The extraction and separation of aloe emodin were optimized via selective molecularly imprinted solid-phase extraction. Molecularly imprinted polymer was prepared from the functional monomer, methacrylic acid and a mixture of ethanol/dodecanol（90/10, volume ratio） as porogen. It overcomes the common problems of imprin- ting biological polar compounds and shows high selectivity compared favorably with those of non-imprinted polymer and commercially available c18 and silica cartridges in similar aloe emodin tests. Good linearity was obtained be- tween 0.002 and 2.5 mg/mL（r2=0.998） with relative standard deviations below 3.3%.

关键词： Aloe emodin Molecularly imprinted polymer Solid-phase extraction High performance liquid chromato- graphy

分子氧条件下co-ETS-10和co-AM-6催化苯乙烯氧化生成氧化苯乙烯和苯甲醛（英文）

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催化学报 2015年第6期36卷 897-905页

作者： Shuvo Jit Datta kyung Byung Yoon Korea center for Artificial Photosynthesis Center for Nano Materials Department of Chemistry Sogang University

Pristine ETS-10 and AM-6 and their co2+-exchanged forms were prepared, and their catalytic activities toward the oxidation of styrene in oxygen atmosphere were studied in dimethylformamide. The catalysts were denoted as co-E10-n(n = 0, 9, 26, 68, 81) and co-A6-m(m = 0, 8, 23, 63, 79), where n and m denote the degree of co2+ exchange. The products of the oxidation process were identified as styrene epoxide(E) and benzaldehyde(B). Both the pristine forms, ETS-10(co-E10-0) and AM-6(co-A6-0), and co2+-exchanged forms displayed catalytic activities. With increasing n or m, the conversion, and hence the rate, increased. Specifically, the rates varied from 6.1 to 12.5 mmol·g-1·h-1with increasing n(co-E10-n catalysts) and from 5.4 to 12.4 mmol·g-1·h-1 with increasing m(co-A6-m catalysts). In contrast, the E/B ratio decreased with increasing n or m. More specifically,the E/B ratio decreased from 2.1 to 0.1 with increasing n from 0 to 81(co-E10-n catalysts) and from 1.3 to 0.1 with increasing m from 0 to 79(co-A6-m catalysts). co-E10-9 displayed the highest E yield and co-A6-79 generated the highest B yield. The highest turnover frequency obtained was 36.3 co-1·h-1, which was the highest one obtained among those obtained for the co2+-exchanged zeolites and mesoporous silica reference materials studied in this work.

关键词：苯乙烯氧化物活性催化剂苯甲醛分子氧二甲基甲酰胺介孔二氧化硅二氧化碳 N催化剂

Detection of EGFR-SEPT14 fusion in cell-free DNA of a patient with advanced gastric cancer: A case report

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World Journal of clinical cases 2021年第12期9卷 2884-2889页

作者： Boyeon Kim Yoonjung Kim Inho Park Jae Yong cho kyung-A Lee Department of Laboratory Medicine Yonsei University College of MedicineSeoul 03722South Korea Department of Laboratory Medicine Gangnam Severance HospitalYonsei University College of MedicineSeoul 06273South Korea center for Precision Medicine Gangnam Severance HospitalYonsei University College of MedicineSeoul 06273South Korea Division of Medical Oncology Department of Internal MedicineGangnam Severance HospitalYonsei University College of MedicineSeoul 06273South Korea

BAcKGROUND Gastric cancer is the fifth most diagnosed cancer worldwide and the third most common cause of cancer-related *** recent decades,increasing application of next-generation sequencing has enabled detection of molecular aberrations,including *** cases where tissue is difficult to obtain,cell-free DNA(cfDNA)is used for detecting mutations to identify the molecular profile of ***,we report a rare case of EGFR-SEPT14 fusion detected from cfDNA analysis in a patient with gastric *** SUMMARY A 49-year-old female diagnosed with advanced gastric cancer in July 2019 received capecitabine and then combination chemotherapy of ramucirumab and paclitaxel,but ascites was *** therapy was switched to nivolumab,but disease progression was observed on a positron emission tomography/computed tomography scan in May *** was discontinued,and cfDNA nextgeneration sequencing was immediately *** genomic variants,including fusions,were analyzed from *** following somatic alterations were detected from the patient’s cfDNA:an APc frameshift mutation(NM_000038.5:c.6579del,p.V2194fs)with variant allele frequency of 0.5%,an EGFR amplification with a copy number of 17.3,and an EGFR-SEPT14 fusion with variant allele frequency of 45.3%.The site of the fusion was exon 24 of EGFR fused to exon 10 of *** fusion was in-frame and considered to be protooncogenic. Although the patient refused to continue therapy, we suggest thatEGFR-targeted therapies be tried in such future *** expanded applications of the cfDNA assay may open a new horizon intreatment of patients with advanced gastric cancer.

关键词： Gene fusion cell-free DNA Liquid biopsy Gastric cancer EGFR tyrosine kinase inhibitor case report

Exploring ideal operative time for best outcomes in gastric cancer surgery:A multi-institutional study based on KLASS-07 database

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chinese Journal of cancer Research 2023年第6期35卷 660-674页

作者： Shin-Hoo Park Ye-Rim Shin Hoon Hur chang Min Lee Jae Seok Min Seung Wan Ryu Hyun Dong chae Oh Jeong chang-In choi Kyo-Young Song Ho Goon Kim Ye Seob Jee Kwang Hee Kim Jeong Goo Kim kyung Sook Yang Hua Huang Sungsoo Park Division of Foregut Surgery Korea University College of MedicineSeoul 02841Republic of Korea Division of Foregut Surgery Korea University Anam HospitalSeoul 02841Republic of Korea Department of Surgery Ajou University School of MedicineSuwon 16499Republic of Korea Division of Foregut Surgery Korea University Ansan HospitalAnsan 15355Republic of Korea Department of Surgery Dongnam Institute of Radiological and Medical SciencesCancer CenterBusan 46033Republic of Korea Department of Surgery Keimyung University Dongsan Medical CenterDaegu 41931Republic of Korea Department of Surgery Catholic University of Daegu School of MedicineDaegu 42472Republic of Korea Department of Surgery Chonnam National University Medical SchoolHwasun 58128Republic of Korea Department of Surgery Pusan National University HospitalPusan 49241Republic of Korea Department of Surgery Catholic University of Seoul St Mary’s HospitalSeoul 06591Republic of Korea Department of Surgery Chonnam National University Medical SchoolGwangju 61469Republic of Korea Department of Surgery Dankook University College of MedicineCheonan 31116Republic of Korea Department of Surgery Busan Paik HospitalInje UniversityBusan 14905Republic of Korea Department of Surgery Daejeon St.Mary’s HospitalCollege of Medicinethe Catholic University of KoreaDaejeon 34943Republic of Korea Department of Biostatistics Korea University College of MedicineSeoul 02841Republic of Korea Department of Gastric cancer and Soft Tissue Sarcoma Fudan University Shanghai Cancer CenterShanghai 200433China Department of Oncology Shanghai Medical CollegeFudan UniversityShanghai 200433China

Objective:While a rushed operation can omit essential procedures,prolonged operative time results in higher ***,the optimal operative time range remains *** study aimed to estimate the ideal operative time range and evaluate its applicability in laparoscopic cancer ***:A prospectively collected multicenter database of 397 patients who underwent laparoscopic distal gastrectomy were retrospectively *** ideal operative time range was statistically calculated by separately analyzing the operative time of uneventful ***,intraoperative and postoperative outcomes were compared among the shorter,ideal,and longer operative time ***:The statistically calculated ideal operative time was 135.4-165.4 *** longer operative time(LOT)group had a lower rate of uneventful,perfect surgery than the ideal or shorter operative time(IOT/SOT)group(2.8%vs.8.8%and 2.2%vs.13.4%,all Pcreased bleeding,postoperative morbidities,and delayed diet and discharge(all Pcularly,an uneventful,perfect surgery could not be achieved when the operative time exceeded 240 *** of ideal time range,SOT group achieved the highest percentage of uneventful surgery(13.4%),which was possible by surgeon's ability to retrieve a higher number of lymph nodes and perform≥150 gastrectomies ***:Operative time longer than the ideal time range(especially≥240 min)should be *** the essential operative procedure were faithfully conducted without compromising oncological safety,an operative time shorter than the ideal range leaded to a better *** to minimize operative time should be attempted with sufficient surgical experience.

关键词： Operative time laparoscopic surgery gastric cancer gastrectomy morbidity

Investigation of the sodium storage mechanism of iron fluoride hydrate cathodes using X-ray absorption spectroscopy and mossbauer spectroscopy

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Journal of Energy chemistry 2023年第2期77卷 535-542,I0014页

作者： Ghulam Ali Muhammad Akbar Faiza Jan Iftikhar Qamar Wali Beata Kalska Szostko Dariusz Satuła kyung Yoon chung Energy Storage Research center Korea Institute of Science and TechnologyHwarang-ro 14 gil 5Seongbuk-guSeoul 02792South Korea USPcAS-E National University of Sciences and Technology(NUST)H-12Islamabad 44000Pakistan Division of Energy&Environment Technology KIST SchoolKorea University of Science and Technology(UST)Hwarang-ro 14-gil-5Seongbuk-guSeoul 02792South Korea NUTEcH School of Applied Sciences and Humanities National University of TechnologyIslamabad 44000Pakistan University of Białystok Faculty of ChemistryCiołkowskiego 1K15-424 BiałystokPoland University of Białystok Faculty of PhysicsCiołkowskiego 1L15-424 BiałystokPoland

Elucidation of a reaction mechanism is the most critical aspect for designing electrodes for highperformance secondary ***,we investigate the sodium insertion/extraction into an iron fluoride hydrate(FeF_(3)·0.5H_(2)O)electrode for sodium-ion batteries(SIBs).The electrode material is prepared by employing an ionic liquid 1-butyl-3-methylimidazolium-tetrafluoroborate,which serves as a reaction medium and precursor for F^(-)*** crystal structure of FeF_(3)·0.5H_(2)O is observed as pyrochlore type with large open 3-D tunnels and a unit cell volume of 1129A^(3).The morphology of FeF_(3)·0.5H_(2)O is spherical shape with a mesoporous *** microstructure analysis reveals primary particle size of around 10 *** FeF_(3)·0.5H_(2)O cathode exhibits stable discharge capacities of 158,210,and 284 mA h g^(-1) in three different potential ranges of 1.5-4.5,1.2-4.5,and 1.0-4.5 V,respectively at 0.05 c *** specific capacities remained stable in over 50 cycles in all three potential ranges,while the rate capability was best in the potential range of 1.5-4.5 *** electrochemical sodium storage mechanism is studied using X-ray absorption spectroscopy,indicating higher conversion at a more discharged ***-situ M?ssbauer spectroscopy strengthens the results for reversible reduction/oxidation of *** results will be favorable to establish high-performance cathode materials with selective voltage window for SIBs.

关键词： Iron fluoride Sodium-ion batteries Pyrochlore X-ray absorption spectroscopy Mössbauer spectroscopy

Low grade gastric mucosa associated lymphoid tissue lymphoma:Treatment strategies based on 10 year follow-up

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World Journal of Gastroenterology 2004年第2期10卷 223-226页

作者： Sang Kil Lee Yong chan Lee Jae Bock chung chae Yoon chon Young Myoung Moon Jin kyung Kang In-Suh Park chang Ok Suh Woo Ik Yang Division of Gastroenterology Department of Internal MedicineYonsei University College of MedicineSeoulSouth Korea Department of Internal Medicine NHIC Ilsan HospitalIlsanSouth Korea Department of Radiation Oncology Yonsei University College of MedicineSeoulSouth Korea Department of Pathology Yonsei University College of MedicineSeoulSouth Korea

AIM:To deduce strategic guidelines of gastric mucosa associated lymphoid tissue lymphoma (MALTOMA) by evaluating the long-term outcome of patients in respect to various treatment modalities. METHODS:A total of 55 patients with MALTOMA from May 1992 to August 2002 were retrospectively reviewed. RESULTS:complete remission was obtained in 24 (82.8%) of 29 patients treated with anti Helicobacter pylori (Hpylori) regimen *** duration to reach complete remission was 12 months (85 percentile,2-33 months).Five patients showed complete remission with radiation therapy (26-86 months).Two of them were Hpyloritreatment failure cases. cONcLUSION:Hpylorieradication is an effective primary treatment option for low grade MALTOMA and radiation therapy could be considered in patients with no evidence of Hpyloriinfection or who do not respond to Hpylorieradication therapy 12 months after successful eradication.

关键词： Adult Aged Endoscopy, Digestive System Follow-Up Studies Gastric Mucosa Helicobacter Infections Helicobacter pylori Humans Lymphoma, Mucosa-Associated Lymphoid Tissue Middle Aged Pyloric Antrum Remission Induction Retrospective Studies Stomach Ulcer