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Water-induced hydrogenation of graphene/metal interfaces at room temperature:Insights on water intercalation and identification of sites for water splitting

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Nano Research 2019年第12期12卷 3101-3108页

作者： Guangyu He Qi Wang hak ki yu Daniel Farias Yingchun Liu Antonio Politano Department of Chemistry Zhejiang UniversityHangzhou 310027China Department of Materials Science and Engineering and Department of Energy Systems Research Ajou UniversitySuwon 16499Republic of Korea Departamento de Ftsica de la Materia Condensada Universidad Autonoma de MadridMadrid 28049Spain Instituto"Nicolas Cabrera"and Condensed Matter Physics Center(IFIMAC) Universidad Autonoma de MadridMadrid 28049Spain Department of Physical and Chemical Sciences University of L'AquilaVia Vetoio 10L'Aquila 1-67100Italy CNR-IMM Istituto per la Microelettronica e Microsistemi VIII strada 5Catania 1-95121Italy

Though it is well recognized that the space between graphene cover and the metal substrate canact as a two-dimensional(2D)nanoreactor,several issues are still unresolved,including the role of the metal substrate,the mechanisms ruling water intercalation and the identification ofsites at which water is ***,we solve these issues by means of density functional theory and high-resolution electron energyloss spectroscopy experiments carried out on graphene grown on(111)-oriented Cu ***,we observe decomposition of H2O atroom temperature with only H atoms forming bonds with graphene and with buried OH groups underneath the graphene *** model discloses physicochemical mechanisms ruling the migration and decomposition of water on graphene/*** discover thatthe edge of graphene can be easily saturated by H through decomposition of H2O,which allows H2O to migrate in the subsurface region from thedecoupled edge,where H2O decomposes at room *** atoms produced by the decomposition of H2O initially form a chemicalbond with graphene for the lower energy barrier compared with other *** findings are essential to exploit graphene/Cu interfaces incatalysis and in energy-related applications.

关键词： graphene/metal interfaces intercalation water splitting room temperature

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Highly Aligned Ternary Nanofiber Matrices Loaded with MXene Expedite Regeneration of Volumetric Muscle Loss

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Nano-Micro Letters 2024年第4期16卷 269-292页

作者： Moon Sung Kang Yeuni yu Rowoon Park Hye Jin Heo Seok Hyun Lee Suck Won Hong yun hak kim Dong‑Wook Han Department of Cogno‑Mechatronics Engineering College of Nanoscience and NanotechnologyPusan National UniversityBusan 46241Republic of Korea Medical Research Institute School of MedicinePusan National UniversityYangsan 50612Republic of Korea Department of Anatomy School of MedicinePusan National UniversityYangsan 50612Republic of Korea Engineering Research Center for Color‑Modulated Extra‑Sensory Perception Technology Pusan National UniversityBusan 46241Republic of Korea Department of Biomedical Informatics School of MedicinePusan National UniversityYangsan 50612Republic of Korea Periodontal Disease Signaling Network Research Center and Dental and Life Science Institute School of DentistryPusan National UniversityYangsan 50612Republic of Korea BIO‑IT Fusion Technology Research Institute Pusan National UniversityBusan 46241Republic of Korea Present Address:Osstem Implant Inc. Seoul 07789Republic of Korea

Current therapeutic approaches for volumetric muscle loss(VML)face challenges due to limited graft availability and insufficient *** overcome these limitations,tissue-engineered scaffolds have emerged as a promising *** this study,we developed aligned ternary nanofibrous matrices comprised of poly(lactide-co-ε-caprolactone)integrated with collagen and Ti_(3)C_(2)T_(x)MXene nanoparticles(NPs)(PCM matrices),and explored their myogenic potential for skeletal muscle tissue *** PCM matrices demonstrated favorable physicochemical properties,including structural uniformity,alignment,microporosity,and *** vitro assays revealed that the PCM matrices promoted cellular behaviors and myogenic differentiation of C2C12 ***,in vivo experiments demonstrated enhanced muscle remodeling and recovery in mice treated with PCM matrices following VML *** insights from next-generation sequencing revealed that MXene NPs facilitated protein and ion availability within PCM matrices,leading to elevated intracellular Ca^(2+)levels in myoblasts through the activation of inducible nitric oxide synthase(i NOS)and serum/glucocorticoid regulated kinase 1(SGK1),ultimately promoting myogenic differentiation via the m TOR-AKT ***,upregulated i NOS and increased NO–contributed to myoblast proliferation and fiber fusion,thereby facilitating overall myoblast *** findings underscore the potential of MXene NPs loaded within highly aligned matrices as therapeutic agents to promote skeletal muscle tissue recovery.

关键词： Ti_(3)C_(2)T_(x)MXene nanoparticle Ternary nanofibrous matrices Myogenesis Regeneration of volumetric muscle loss Next generation sequencing

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Web of Cell体系——适应未来智能电网发展的新理念

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电力系统自动化 2017年第15期41卷 1-9页

作者：宋蕙慧于国星曲延滨 hak-Man kiM 哈尔滨工业大学(威海)信息与电气工程学院山东省威海市264209 韩国仁川国立大学工学院

针对未来大量分布式发电并网需求,以智能电网为背景阐释了一种全新的电力系统控制体系——Web of Cell体系。首先,诠释该体系的概念并总结归纳出其特点,通过对比Web of Cell体系与集中控制体系及Cell与微电网和主动配电网间的差异,剖析... 详细信息

针对未来大量分布式发电并网需求,以智能电网为背景阐释了一种全新的电力系统控制体系——Web of Cell体系。首先,诠释该体系的概念并总结归纳出其特点,通过对比Web of Cell体系与集中控制体系及Cell与微电网和主动配电网间的差异,剖析了该体系在未来电力系统中的优势和可行性。随后,对该体系调压调频的控制结构和运行方式进行了分析并指出应重点关注的技术问题。最后,对该体系的进一步发展和研究方向进行了展望,以期为中国电网智能化发展提供参考和借鉴。

关键词：智能电网 Web of Cell体系集中控制体系微电网(微网) 调压调频

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Materialization of strained CVD-graphene using thermal mismatch

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Nano Research 2015年第6期8卷 2082-2091页

作者： Seung-Mo Lee Sang-Min kim Min Young Na Hye Jung Chang Kwang-Seop kim Hyunung yu hak-Joo Lee Jae-Hyun kim Nano-Convergence Mechanical Systems Research Division Korea Institute of Machinery & Materials (KIMM) 156 Gajungbuk-ro Yuseong-gu Daejeon 305-343 Republic of Korea Nano Mechatronics University of Science and Technology (UST) 217 Gajeong-ro Yuseong-gu Daejeon 305-333 Republic of Korea Graduate School of Energy Environment Water and Sustainability Korea Advanced Institute of Science & Technology (KAIST) Daejeon 305-701 Republic of Korea Department of Materials Science and Engineering Yonsei University SO Yonsei-ro Seodaemun-gu Seou1120-749 Republic of Korea Advanced Analysis Center Korea Institute of Science and Technology (KIST) Hwarang-ro 14-gil 5 Seongbuk-gu Seoul 130-791 Republic of Korea Korea Research Institute of Standards and Science (KRISS) 267 Gajeong-ro Yuseong-gu Daejeon 305-343 Republic of Korea

Theoretical physics foretells that ＂strain engineering＂ of graphene could hold the key to finding treasures still hidden in two-dimensional （2D） condensed matter physics and commercializing graphene-based devices. However, to produce strained graphene in large quantities is not an easy task by any means. Here, we demonstrate that thermal annealing of graphene placed on various substrates could be a surprisingly simple method for preparing strained graphene with a large area. We found that enhanced graphene-substrate interfacial adhesion plays a critical role in developing strained graphene. Creative device architectures that consider the thermal mismatch between graphene and the target substrate could enable the resulting strain to be intentionally tailored. We believe that our proposed method could suggest a shortcut to realization of graphene straintronics.

关键词： graphene strain engineering thermal mismatch strained graphene

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kindergarten Teacher’s Knowledge of Enterobiasis in Korea

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Open Journal of Nursing 2014年第4期4卷 330-336页

作者： Dong-Hee kim hak-Sun yu Department of Nursing College of Nursing Pusan National University Yangsan South Korea Department of Parasitology School of Medicine Pusan National University Yangsan South Korea

Previous reports have suggested that the environment of day care centres is a crucial factor in the development of enterobiasis. There is a lack of data regarding a teacher’s knowledge about enterobiasis although kindergarten teachers have the greatest influence on a child’s habits because the child spends a lot of time with them and because they manage the child’s physical environment. The focus of the present study was to evaluate the kindergarten teacher’s level of knowledge regarding enterobiasis. The cross-sectional survey is with 287 kindergarten teachers from 36 kindergartens in Korea. The level of knowledge regarding Enterobius vermicularis infection was measured using questionnaires. The percentage of correct answers to questions testing knowledge of enterobiasis ranged from 23.7 percent to 99.3 percent. The average score for the section on knowledge of enterobiasis was 7.85 (possible range: 0-12). The question “enterobiasis occurs through contaminated water” had the least correct answer rate (23.7%). The findings of this study suggest the need for increasing the kindergarten teacher’s knowledge regarding enterobiasis. Educational programs for kindergarten teachers will have a long-term impact on the prevalence of this infection.

关键词： Enterobius vermicularis Knowledge Health Education kindergarten

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Does prostate-specific antigen (PSA)mass or free PSA mass improve the accuracy of predicting total prostate volume in relation to obesity in men with biopsy-proven benign prostatic hyperplasia?

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Asian Journal of Andrology 2019年第1期21卷 86-91页

作者： Jin-Woo Jung young Dong yu Young Ju Lee Jung Jun kim hak Min Lee Jong Jin Oh Sangchul Lee Sang Wook Lee Sang Eun Lee Seong Jin Jeong Department of Urology Catholic Kwandong Univerisity International St.Mary's HospitalIncheon 22711Korea Department of Urology Seoul National University Bundang HospitalSeongnam 13620Korea Department of Urology Kangwon National University School of MedicineChuncheon 24341Korea

We evaluated whether the prostate-specific antigen (PSA)mass or free PSA (fPSA)mass (i.e.,absolute amount of total circulating PSA or fPSA protein,respectively),versus serum PSA or fPSA concentration,improves the accuracy of predicting the total prostate volume (TPV)in relation to *** men whose multicore (≥12)transrectal prostate biopsy was negative,586 who had a PSA of <10 ng ml^-1 and underwent the fPSA test prior to biopsy were *** PSA mass or fPSA mass (pg)was calculated by multiplying the serum level by plasma *** each TPV cut-off point (30 ml,40 ml,and 50 ml),the areas under the receiver operating characteristics curve (AUCs)of each variable were compared in obesity-based *** of fPSA and fPSA mass for predicting TPV were significantly larger than those for PSA and PSA mass by 8.7%-12.1%at all cut-off points. Subgroup analyses based on obesity showed that,although PSA mass and fPSA mass enhanced accuracy by 4%(P =0.031)and 1.8%(P =0.003),respectively,for determining TPVs of ≥30 ml and ≥50 ml in obese and overweight men,they did not improve the accuracy in most other combinations of the degrees of obesity with TPV cut-off ***,compared with serum PSA or fPSA,the absolute amount of PSA or fPSA protein mass improved the accuracy of predicting TPV in obese men very minimally and only for certain TPV cut-off ***,these indicators may not provide clinically meaningful improvement in predicting TPV in obese men.

关键词： benign prostatic hyperplasia obesity prostate volume prostate-specific antigen mass

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Retiform Sertoli-Leydig Cell Tumor of the Ovary

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International Journal of Clinical Medicine 2016年第9期7卷 592-597页

作者： Gyu-Bong yu Seung-Kyu Choi yun-Dan Kang Choong-hak Park Department of Obstetrics and Gynecology College of Medicine Dankook University Cheonan Korea Department of Pathology College of Medicine Dankook University Cheonan South Korea

Sertoli-Leydig cell tumor of the ovary is a kind of sex cord-stromal tumor, which occurs between teens and twenties with symptoms including abdominal pain and swelling. The incidence rate is infinitely rare comprising less than 0.5% of all ovarian tumor. The average age of “retiform Sertoli-Leydig cell tumor” is 17 years as compared to 25 years for Sertoli-Leydig cell tumors as a group. We have experienced this rare case of retiform Sertoli-Leydig cell tumor in a 25-year-old foreign patient with the complaint of palpable mass on the right lower quadrant and an irregular menstrual period. The patient underwent right salpingo-oophorectomy and tumor stage was FIGO stage 1A. We report with a brief review of literature.

关键词： Sertoli-Leydig Cell Tumor Retiform Pattern Sex Cord-Stromal Tumor Ovary

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L形钢管混凝土柱-H型钢梁Z字形拼接节点抗震性能研究

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建筑结构 2021年第23期51卷 61-68页

作者：刘学春 IM MYONG hak 陈学森余少乐潘钧俊北京工业大学北京市高层和大跨度预应力钢结构工程技术研究中心北京100124 中国建筑第八工程局有限公司上海200135

研究了一种L形钢管混凝土柱-H型钢梁Z字形拼接节点的抗震性能,包括翼缘和腹板均拼接的节点和设置上、下部翼缘加劲肋替代腹板处拼接板的节点。通过对节点的拟静力试验和研究,获得了节点的滞回曲线、滑移荷载、屈服荷载、极限荷载、耗能... 详细信息

研究了一种L形钢管混凝土柱-H型钢梁Z字形拼接节点的抗震性能,包括翼缘和腹板均拼接的节点和设置上、下部翼缘加劲肋替代腹板处拼接板的节点。通过对节点的拟静力试验和研究,获得了节点的滞回曲线、滑移荷载、屈服荷载、极限荷载、耗能能力、延性与刚度退化规律,分析腹板处拼接板和翼缘加劲肋对节点抗震性能的影响。研究结果表明:腹板处拼接板可以提高节点的屈服荷载和极限荷载。增加翼缘高强螺栓数量可以提高节点的滑移荷载,但会降低节点的延性性能。垂直加劲肋可以提高节点的屈服荷载、极限荷载和延性。对比有无上、下翼缘加劲肋的两组节点可知,上、下翼缘加劲肋可以提高节点的承载能力,有效传递拼接区的剪力,可代替腹板连接,该节点具有良好的延性和塑性转动能力。

关键词：钢结构梁柱连接悬臂梁段抗震性能破坏模式

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Sprayable nanomicelle hydrogels and inflammatory bowel disease patient cell chips for development of intestinal lesion-specific therapy

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Bioactive Materials 2022年第12期7卷 433-445页

作者： Hyo-Jin Yoon Songhyun Lee Tae Young kim Seung Eun yu Hye-Seon kim Young Shin Chung Seyong Chung Suji Park Yong Cheol Shin Eun Kyung Wang Jihye Noh Hyun Jung kim Cheol Ryong Ku Hong Koh Chang-Soo kim Joon-Sang Park Young Min Shin hak-Joon Sung Department of Medical Engineering Yonsei University College of MedicineSeoul03722Republic of Korea School of Electrical and Electronic Engineering Yonsei UniversitySeoul03722Republic of Korea Department of Obstetrics and Gynecology Institution of Women’s Life Medical ScienceSeverance HospitalYonsei University College of MedicineSeoul03722Republic of Korea Department of Biomedical Engineering The University of Texas at AustinAustinTX78712USA Department of Internal Medicine EndocrinologyInstitute of Endocrine ResearchYonsei University College of MedicineSeoul03722Republic of Korea Department of Pediatrics GastroenterologySeverance HospitalYonsei University College of MedicineSeoul03722Republic of Korea Department of Computer Engineering Hongik UniversitySeoul04066Republic of Korea Institute of Tissue Regeneration Engineering(ITREN) Dankook UniversityCheonan31116Republic of Korea Numais Co. Ltd.Korea Seoul 04799Republic of Korea

All-in-one treatments represent a paradigm shift in future *** example,inflammatory bowel disease(IBD)is mainly diagnosed by endoscopy,which could be applied for not only on-site monitoring but also the intestinal lesion-targeted spray of injectable ***,molecular conjugation to the hydrogels would program both lesion-specific adhesion and drug-free *** study validated this concept of all-in-one treatment by first utilizing a well-known injectable hydrogel that underwent efficient solution-to-gel transition and nanomicelle formation as a translatable *** properties enabled spraying of the hydrogel onto the intestinal walls during ***,peptide conjugation to the hydrogel guided endoscopic monitoring of IBD progress upon adhesive gelation with subsequent moisturization of inflammatory lesions,specifically by *** peptide was designed to mimic the major component that mediates intestinal interaction with Bacillus subtilis flagellin during IBD ***,the peptide-guided efficient adhesion of the hydrogel nanomicelles onto Toll-like receptor 5(TLR5)as the main target of flagellin binding and *** peptide binding potently suppressed inflammatory signaling without drug loading,where TLR5 and Notch-1 operated collaboratively through downstream actions of tumor necrosis *** results were produced using a human colorectal cell line,clinical IBD patient cells,gut-on-a-chip,a mouse IBD model,and pig experiments to validate the translational utility.

关键词： Nanomicelle Injectable hydrogel Peptide display Theranostic All-in-one treatment Inflammatory bowel disease

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类泛素蛋白FAT10共价结合底物蛋白质的活性分析

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复旦学报（医学版） 2012年第6期39卷 569-574页

作者：于欣王英明吴燕华金成学穆颖乔守怡复旦大学生命科学学院遗传工程国家重点实验室上海200433 金日成大学平壤医学院基础医学部平壤

目的探讨类泛素蛋白FAT10的C末端双甘氨酸基团及双泛素结构域结合修饰底物蛋白质的活性。方法分别将野生型全长FAT10,C末端双甘氨酸的缺失突变体FAT10ΔGG,分别包含N端、C端泛素结构域的截断突变体FAT10-N和FAT10-C构建到真核表达载体中... 详细信息

目的探讨类泛素蛋白FAT10的C末端双甘氨酸基团及双泛素结构域结合修饰底物蛋白质的活性。方法分别将野生型全长FAT10,C末端双甘氨酸的缺失突变体FAT10ΔGG,分别包含N端、C端泛素结构域的截断突变体FAT10-N和FAT10-C构建到真核表达载体中,转染HEK293T细胞,并使用26S蛋白酶体抑制剂MG132处理细胞。利用Western blot方法检测野生型FAT10及其突变体结合底物蛋白质的活性。结果与野生型FAT10的蛋白质底物结合能力相比,FAT10ΔGG、FAT10-N、FAT10-C与底物蛋白质结合能力均显著下降。蛋白酶体抑制剂MG132能够促进FAT10及其突变体的底物结合活性。结论 FAT10的C末端双甘氨酸基团及双泛素结构域都是FAT10与底物共价结合所需的活性基团,被FAT10标记后的底物蛋白质通过26S蛋白酶体途径降解。

关键词：类泛素蛋白 FAT10 泛素结构域

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