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Analgesic efficacy of median nerve stimulation in mice with chemotherapy-induced peripheral neuropathy via modulation of brain-derived neurotrophic factor expression

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中医杂志:英文版 2023年第4期43卷 686-694页

作者： dong-wook kang Jae-Gyun Choi Hee Ju Song Jaehyuk Kim Miae Lee Taehee Kim Suk-Yun kang Yeonhee Ryu Hwa Seung Yoo Jin Sun Lee Jin Bong Park Sang Do Lee Hyun-Woo Kim Department of Physiology and Medical Science College of Medicine and Brain Research InstituteChungnam National UniversityDaejeon 35015Republic of Korea KM Fundamental Research Division Korea Institute of Oriental Medicine Daejeon 34054Republic of Korea East-West Cancer Center Dunsan Korean Medicine Hospital of Daejeon UniversityDaejeon 35234Republic of Korea Department of Surgery Chungnam National University HospitalDaejeon 35015Republic of Korea Laboratory of Veterinary Pharmacology College of Veterinary Medicine and Research Institute for Veterinary ScienceSeoul National University1 Gwanak-roGwanak-guSeoul 08826Republic of Korea

OBJECTIVE:Chemotherapeutic agents such as docetaxel(DTX)can trigger chemotherapy-induced peripheral neuropathy(CIPN),which is characterized by unbearable *** study was designed to investigate the analgesic effect and related neuronal mechanism of low-frequency median nerve stimulation(LFMNS)on DTX-induced tactile hypersensitivity in ***:To produce CIPN,DTX was administered intraperitoneally 4 times,once every 2 d,to male ICR *** was performed on the wrist area,and the pain response was measured using von Frey filaments on both hind *** blot and immunofluorescence staining were performed using dorsal root ganglion and spinal cord samples to measure the expression of brainderived neurotrophic factor(BDNF).RESULTS:Repeated LFMNS significantly attenuated the DTX-induced abnormal sensory response and suppressed the enhanced expression of BDNF in the DRG neurons and spinal dorsal ***:LFMNS might be an effective nonpharmaceutical option for treating patients suffering from CIPN via regulating the expression of peripheral and central BDNF.

关键词： analgesia brain-derived neurotrophic factor chemotherapy-induced peripheral neuropathy docetaxel nerve stimulation

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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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Network Traffic Synthesis and Simulation Framework for Cybersecurity Exercise Systems

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Computers, Materials & Continua 2024年第9期80卷 3637-3653页

作者： dong-wook Kim Gun-Yoon Sin Kwangsoo Kim Jaesik kang Sun-Young Im Myung-Mook Han Department of AI Software Gachon UniversitySeongnam-Si13120Republic of Korea School of Computer Engineering&Applied Mathematics Hankyong National UniversityPyeongtaek-Si17738Republic of Korea Cyber ElectronicWarfare Research and Development LIG Nex1Seongnam-Si13488Republic of Korea

In the rapidly evolving field of cybersecurity,the challenge of providing realistic exercise scenarios that accurately mimic real-world threats has become increasingly *** methods often fall short in capturing the dynamic and complex nature of modern cyber *** address this gap,we propose a comprehensive framework designed to create authentic network environments tailored for cybersecurity exercise *** framework leverages advanced simulation techniques to generate scenarios that mirror actual network conditions faced by professionals in the *** cornerstone of our approach is the use of a conditional tabular generative adversarial network(CTGAN),a sophisticated tool that synthesizes realistic synthetic network traffic by learning fromreal data *** technology allows us to handle technical components and sensitive information with high fidelity,ensuring that the synthetic data maintains statistical characteristics similar to those observed in real network *** meticulously analyzing the data collected from various network layers and translating these into structured tabular formats,our framework can generate network traffic that closely resembles that found in actual *** integral part of our process involves deploying this synthetic data within a simulated network environment,structured on software-defined networking(SDN)principles,to test and refine the traffic *** simulation not only facilitates a direct comparison between the synthetic and real traffic but also enables us to identify discrepancies and refine the accuracy of our *** initial findings indicate an error rate of approximately 29.28%between the synthetic and real traffic data,highlighting areas for further improvement and *** providing a diverse array of network scenarios through our framework,we aim to enhance the exercise systems used by cybersecurity *** not only improves their ability to r

关键词： Cybersecurity exercise synthetic network traffic generative adversarial network traffic generation software-defined networking

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Pancreatic pseudocyst filled with semisolid lipids mimicking solid mass on endoscopic ultrasound

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World Journal of Gastroenterology 2010年第8期16卷 1034-1038页

作者： Sang-Woo Cha Sae Hee Kim Hyang Ie Lee Yun Jung Lee Hyeon Woong Yang Sung Hee Jung Anna Kim Min Koo Lee Hyun Young Han dong wook kang Division of Gastroenterology Department of Internal Medicine Eulji University College of Medicine Eulji University Hospital Division of Gastroenterology Department of Surgery Eulji University College of Medicine Eulji University Hospital Division of Gastroenterology Department of Radiology Eulji University College of Medicine Eulji University Hospital Division of Gastroenterology Department of Pathology Eulji University College of Medicine Eulji University Hospital

Pancreatic pseudocysts,which account for 70%-90% of pancreatic cystic lesions,characteristically are non-epithelially lined cystic cavities that are contiguous with the pancreas. Pancreatic pseudocysts can be caused by acute,chronic or traumatic pancreatitis and should be differentiated from other pancreatic diseases with cystic appearances,especially cystic neoplasms. We report a unique case of a pancreatic pseudocyst filled with semisolid lipids,which appeared by endoscopic ultrasound as a solid mass,and was therefore resected.

关键词： Pancreatic pseudocyst Lipids Endosonog-raphy

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Incorporation of Ionic Conductive Polymers into Sulfide Electrolyte-Based Solid-State Batteries to Enhance Electrochemical Stability and Cycle Life

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ENERGY & ENVIRONMENTAL MATERIALS 2024年第6期7卷 4-12页

作者： Kim, Juhyoung Choi, Woonghee Hwang, Seong-Ju Kim, dong wook Korea Res Inst Chem Technol KRICT Adv Mat Div Daejeon 34114 South Korea Yonsei Univ Dept Mat Sci & Engn Seoul 03722 South Korea Seoul Natl Univ Dept Mat Sci & Engn Seoul 08826 South Korea Univ Sci & Technol UST Adv Mat & Chem Engn Daejeon 34113 South Korea

Sulfide-based inorganic solid electrolytes are promising materials for high-performance safe solid-state batteries. The high ion conductivity, mechanical characteristics, and good processability of sulfide-based inorganic solid electrolytes are desirable properties for realizing high-performance safe solid-state batteries by replacing conventional liquid electrolytes. However, the low chemical and electrochemical stability of sulfide-based inorganic solid electrolytes hinder the commercialization of sulfide-based safe solid-state batteries. Particularly, the instability of sulfide-based inorganic solid electrolytes is intensified in the cathode, comprising various materials. In this study, carbonate-based ionic conductive polymers are introduced to the cathode to protect cathode materials and suppress the reactivity of sulfide electrolytes. Several instruments, including electrochemical spectroscopy, X-ray photoelectron spectroscopy, and scanning electron microscopy, confirm the chemical and electrochemical stability of the polymer electrolytes in contact with sulfide-based inorganic solid electrolytes. Sulfide-based solid-state cells show stable electrochemical performance over 100 cycles when the ionic conductive polymers were applied to the cathode. This study develops electrochemically stable poly(propylene carbonate) (PPC) ionic conductive polymer as an alternative to the commonly used coating or buffer materials, including inorganic materials, polymeric rubbers, and PEO ionic conductive polymers. The ionic conductive polymer enhances the long-term cycle stability of sulfide-based solid-state batteries by protecting the cathode materials and compensating for the volume change during the repeated cycling. image

关键词： composite cathode electrochemical stability ionic conductive polymer solid-state battery sulfide solid electrolyte INTERPHASE FORMATION KINETICS CATHODES GROWTH

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Trifunctional robust electrocatalysts based on 3D Fe/N-doped carbon nanocubes encapsulating Co4N nanoparticles for efficient battery-powered water electrolyzers

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Carbon Energy 2024年第6期6卷 124-139页

作者： Hyung wook Choi Hongdae Lee Jun Lu Seok Bin Kwon dong In Jeong Beum Jin Park Jiwon Kim Bong Kyun kang Gun Jang Dae Ho Yoon Ho Seok Park SKKU Advanced Institute of Nano Technology(SAINT) Sungkyunkwan UniversitySuwon-siGyeonggi-doRepublic of Korea School of Chemical Engineering Sungkyunkwan UniversitySuwon-siGyeonggi-doRepublic of Korea School of Advanced Materials Science and Engineering Sungkyunkwan UniversitySuwon-siGyeonggi-doRepublic of Korea Department of Electronic Materials Devicesand Equipment EngineeringSoonchunhyang UniversityAsan CityChungnamRepublic of Korea SKKU Institute of Energy Science and Technology(SIEST) Sungkyunkwan UniversitySuwon-siGyeonggi-doRepublic of Korea Department of Health Sciences and Technology Samsung Advanced Institute for Health Sciences and Technology(SAIHST)Sungkyunkwan UniversitySuwonRepublic of Korea

Herein,we have designed a highly active and robust trifunctional electrocatalyst derived from Prussian blue analogs,where Co_(4)N nanoparticles are encapsulated by Fe embedded in N-doped carbon nanocubes to synthesize hierarchically structured Co_(4)N@Fe/N-C for rechargeable zinc-air batteries and overall water-splitting *** confirmed by theoretical and experimental results,the high intrinsic oxygen reduction reaction,oxygen evolution reaction,and hydrogen evolution reaction activities of Co_(4)N@Fe/N-C were attributed to the formation of the heterointerface and the modulated local electronic ***,Co_(4)N@Fe/N-C induced improvement in these trifunctional electrocatalytic activities owing to the hierarchical hollow nanocube structure,uniform distribution of Co_(4)N,and conductive encapsulation by Fe/***,the rechargeable zinc-air battery with Co_(4)N@Fe/N-C delivers a high specific capacity of 789.9 mAh g^(-1) and stable voltage profiles over 500 ***,the overall water electrolyzer with Co_(4)N@Fe/N-C achieved better durability and rate performance than that with the Pt/C and IrO2 catalysts,delivering a high Faradaic efficiency of 96.4%.Along with the great potential of the integrated water electrolyzer powered by a zinc-air battery for practical applications,therefore,the mechanistic understanding and active site identification provide valuable insights into the rational design of advanced multifunctional electrocatalysts for energy storage and conversion.

关键词： battery-powered electrolyzers hierarchical structure Prussian blue analog trifunctional electrocatalyst zinc-air battery

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Transparent high-performance piezoceramics through pressureless sintering

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Journal of Advanced Ceramics 2024年第5期13卷 561-567页

作者： Hye-Lim Yu Woo-Seok kang Ju-Hyeon Lee Temesgen Tadeyos Zate Young-Jin Lee Bo-Kun Koo dong-Jin Shin Min-Soo Kim Soon-Jong Jeong Young Ghyu Ahn wook Jo Department of Material Science and Engineering Ulsan National Institute of Science and TechnologyUlsan 44919Republic of Korea Energy Conversion Research Center Korea Electrotechnology Research InstituteChangwon 51543Republic of Korea MLCC Development Team Component Biz.UnitSamsung Electro-Mechanics Co.Ltd.Suwon 16674Republic of Korea

Piezoelectricity offers an electromechanical coupling that is widely utilized in transducer *** has been a consistent demand for transparent piezoelectric materials for optoelectrical ***,despite the inherent tradeoff between the transparency and the piezoelectricity,numerous strategies have been explored to develop the transparent piezoelectric ***,the most transparent piezoelectric materials developed to date is either a single crystal or materials that achieve transparency via hot-press sintering,limiting its industrial ***,we introduce a novel piezoelectric material that ensures transparency through co-doping and pressureless sintering of polycrystalline *** this study,we employed a compositional optimization approach to enhance the synergistic effect between the transparency and the piezoelectric properties of 0.71Pb(Mg_(1/3)Nb_(2/3))O_(3)–0.29PbTiO_(3)(PMN–0.29PT)*** utilizing the tape casting process for mass production and large-area manufacturing,our Pb_(0.913)La_(0.0145)Sm_(0.0145)(Mg_(1/3)Nb_(2/3))_(0.71)Ti_(0.29)O_(3)(TP2.9)ceramics exhibited over 60%transparency and large piezoelectric coefficient(d33)of 1104 pC/*** material holds considerable promise for a wide range of industrial applications in both the optical and electronic domains.

关键词： piezoelectric ceramics transparency pressureless sintering co-doping tape casting

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Colonoscopy-induced ischemic colitis in patients without risk factors

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World Journal of Gastroenterology 2014年第13期20卷 3698-3702页

作者： Sang Ok Lee Sae Hee Kim Sung Hee Jung Chan Woong Park Min Ji Lee Jin A Lee Hyun Cheol Koo Anna Kim Hyun-Young Han dong-wook kang Division of Gastroenterology Department of Internal MedicineEulji University College of MedicineEulji University HospitalDaejeon 302-779South Korea Department of radiology Eulji University College of MedicineEulji University HospitalDaejeon 302-779South Korea Department of pathology Eulji University College of MedicineEulji University HospitalDaejeon 302-779South Korea

Ischemic colitis is the most common form of intestinal *** is a condition that is commonly seen in the elderly and among individuals with risk factors for *** predisposing conditions for ischemic colitis are major vascular occlusion,small vessel disorder,shock,some medications,colonic obstructions and hematologic *** colitis following colonoscopy is ***,we report two cases of ischemic colitis after a routine screening colonoscopy in patients without risk factors for ischemia.

关键词： Ischemic colitis Colonoscopy Hematochezia

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In-situ electrochemical functionalization of carbon materials for high-performance Li–O2 batteries

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Journal of Energy Chemistry 2020年第9期29卷 7-13,I0001页

作者： Jungwon kang Jin Min Kim Do Youb Kim Jungdon Suk Jaekook Kim dong wook Kim Yongku kang Department of Advanced Materials Science and Engineering Mokpo National University61 dorim-ri1666 Yeongsan-roCheonggye-myeonMuan-gunJeonnamSouth Korea Center for Advanced Battery Materials Advanced Materials DivisionKorea Research Institute of Chemical Technology(KRICT)141 Gajeong-RoYuseong-GuDaejeon 305-600South Korea Department of Materials Science and Engineering Chonnam National University300 Yongbong-dongBukguGwangju 500-757South Korea

The development of effective synthetic routes is important to manifest proper nature of specific ***-situ electrochemical functionalization possesses great advantages over conventional routes,especially facile way and leading to reaching elaborate sites of functional ***,we demonstrate the preparation of functionalized carbons by in-situ electrochemical reduction in an argon atmosphere for application in low-cost,environmentally benign,and high-performance oxygen-electrodes for non-aqueous Li-O2 batteries.A Li-O2 battery with functionalized carbon shows a high discharge capacity(100 times that of pristine carbon),high power and cycling *** outstanding performance is attributed to the high O2 affinity of the functionalized carbon surface that facilitates the formation of soluble and diffusible superoxide intermediates by the reduction of the remaining O2 competing with surface growth for Li2O2 formation.

关键词： Lithium-oxygen battery High areal capacity Functionalization of carbon Electrochemistry

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Percutaneous ablation for perivascular hepatocellular carcinoma: Refining the current status based on emerging evidence and future perspectives

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World Journal of Gastroenterology 2018年第47期24卷 5331-5337页

作者： Tae wook kang Hyo Keun Lim dong Ik Cha Department of Radiology and Center for Imaging Science Samsung Medical Center Sungkyunkwan University School of Medicine Department of Health Sciences and Technology SAIHST Sungkyunkwan University

Various therapeutic modalities including radiofrequency ablation, cryoablation, microwave ablation, and irreversible electroporation have attracted attention as energy sources for effective locoregional treatment of hepatocellular carcinoma(HCC); these are accepted non-surgical treatments that provide excellent local tumor control and favorable survival. However, in contrast to surgery, tumor location is a crucial factor in the outcomes of locoregional treatment because such treatment is mainly performed using a percutaneous approach for minimal invasiveness; accordingly, it has a limited range of ablation volume. When the index tumor is near large blood vessels, the blood flow drags thermal energy away from the targeted tissue, resulting in reduced ablation volume through a socalled "heat-sink effect". This modifies the size and shape of the ablation zone considerably. In addition, serious complications including infarction or aggressive tumor recurrence can be observed during follow-up after ablation for perivascular tumors by mechanical or thermal damage. Therefore, perivascular locations of HCC adjacent to large intrahepatic vessels can affect post-treatment outcomes. In this review, we primarily focus on physical properties of perivascular tumor location, characteristics of perivascular HCC,potential complications, and clinical outcomes after various locoregional treatments; moreover, we discuss the current status and future perspectives regarding percutaneous ablation for perivascular HCC.

关键词： Hepatocellular carcinoma Perivascular Radiofrequency ablation Liver Cryoablation Microwave ablation Irreversible electroporation

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