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Consecutive hybrid mechanism boosting Na+storage performance of dual-confined SnSe2 in N,Se-doping double-walled hollow carbon spheres

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Journal of Energy Chemistry 2022年第11期31卷 8-17,I0002页

作者： Xiaoyu Wu Zhenshan Yang Lin Xu JianHua Wang Lele Fan Fanjie Kong Qiaofang Shi Yuanzhe Piao Guowang Diao Ming Chen School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225002JiangsuChina Key Laboratory for Advanced Technology in Environmental Protection of jiangsu Province Yancheng Institute of TechnologyYancheng 224051JiangsuChina Department of Physics Yancheng Institute of TechnologyYancheng 224051JiangsuChina Graduate School of Convergence Science and Technology Seoul National University145 Gwanggyo-roYeongtong-guSuwon-si 16229Gyeonggi-doRepublic of Korea Advanced Institutes of Convergence Technology 145 Gwanggyo-roYeongtong-guSuwon-siGyeonggi-do16229Republic of Korea

Rationally designed hierarchical structures and heteroatomic doping of carbon are effective strategies to enhance the stability and electrical conductivity of ***,SnSe_(2)flakes were generated in the double-walled hollow carbon spheres(DWHCSs),in which N and Se atoms were doped in the carbon walls,to construct SnSe_(2)@N,Se-DWHCSs by confined growth and in-situ *** N and Sedoped DWHCSs can effectively limit the size increase of SnSe_(2),promote ion diffusion kinetics,and buffer volume expansion,which can be proved by electron microscope observation and density functional theory ***,the SnSe_(2)@N,Se-DWHCSs as an anode material for sodium ion batteries(SIBs)demonstrated a distinguished reversible capacity of 322.8 mAh g^(-1)at 5 A g^(-1)after 1000 cycles and a superior rate ability of 235.3 m Ah g^(-1)at an ultrahigh rate of 15 A g^(-1).Furthermore,the structure evolution and electrochemical reaction processes of SnSe2@N,Se-DWHCSs in SIBs were analyzed by exsitu methods,which confirmed the consecutive hybrid mechanism and the phase transition process.

关键词： SnSe2 N,Se-doping Double-walled hollow carbon spheres Hybrid mechanism Sodium-ion battery

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A Preliminary Study of Vibration Feedback for Robot-assisted Endovascular Surgery 20

A Preliminary Study of Vibration Feedback for Robot-assisted...

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20th IEEE International Conference on Mechatronics and Automation, ICMA 2023

作者： Li, Xinming Guo, Shuxiang Graduate School of Engineering Kagawa University Hayashi-cho Takamatsu761-0396 Japan Southern University of Science and Technology The Department of Electronic and Electrical Engineering Guangdong Shenzhen518055 China School of Life Science Beijing Institute of Technology Key Laboratory of Convergence Medical Engineering System and Healthcare Technology The Ministry of Industry and Information Technology Haidian District Beijing100081 China

ISBN: (纸本)9798350320831

The study of haptic perception is significant and general for robot-assisted endovascular surgery. During actual surgical procedure, feedback information has advantages in monitoring the insertion process, providing direct instruction for surgeons, and improving operation safety. In this work, a new implementation of haptic perception named vibration feedback is concepted and proposed based on micro vibration motor. Related working principles and kinetic analysis of vibration feedback are descripted based on three kinds of vibration patterns. Two kinds of experiments are conducted to determine suitable parameters of duty cycle for vibration feedback and test the using performance in human model. Experimental results indicate that the proposed vibration feedback is feasible and helpful to offer a haptic perception. Moreover, benefiting from the micro size of vibration motor, this study also has potential value for some research fields like small wearable device, micro haptic feedback, multi-level feedback perception for robotic systems. © 2023 IEEE.

关键词： Vibration analysis

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Vastly Synergistic Fe_(2)CuNiS_(4)-nanoarchitectures Anchored 2D-nano-Sandwich Derived from Flower-Like-CuFeS_(2)/N-Graphene and Cube-Like-NiFeS_(2)/N-CNTs for Water Oxidation and Nitrophenol Reduction

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Energy & Environmental Materials 2024年第6期7卷 274-289页

作者： Gopiraman Mayakrishnan Ramkumar Vanaraj Junpeng Xiong Muhammad Farooq Azeem Ullah Keqin Zhang Seong Cheol Kim Ick Soo Kim Nano Fusion Technology Research Group Division of Molecules and PolymersInstitute for Fiber Engineering(IFES)Interdisciplinary Cluster for Cutting Edge Research(ICCER)Shinshu UniversityTokida 3-15-1UedaNagano 386-8567Japan School of Chemical Engineering Yeungnam UniversityGyeongsan 38541Korea Graduate School of Medicine Scienceand TechnologyShinshu UniversityTokida 3-15-1UedaNagano 386-8567Japan National Engineering Laboratory for Modern Silk College of Textile and Clothing EngineeringSoochow UniversitySuzhou 215123China

Surface area,pore properties,synergistic behavior,homogenous dispersion,and interactions between carbon matrix and metal-nanostructures are the key factors for achieving the better performance of carbon-metal based(electro)***,the traditional hydro-or solvothermal preparation of(electro)catalysts,particularly,bi-or tri-metallic nanostructures anchored graphene(G)or carbon nanotubes(CNTs),often pose to poor metal–support interaction,low synergism,and patchy *** first,bimetallic flower-like-CuFeS_(2)/NG and cube-like-NiFeS_(2)/NCNTs nanocomposites were prepared by solvothermal *** resultant bimetallic nanocomposites were employed to derive the 2D-nano-sandwiched Fe_(2)CuNiS_(4)/NGCNTs-SW(electro)catalyst by a very simple and green urea-mediated“mix-heat”*** desired physicochemical properties of Fe_(2)CuNiS_(4)/NGCNTs-SW such as multiple active sites,strong metal-support interaction,homogenous dispersion and enhanced surface area were confirmed by various microscopic and spectroscopic *** the best of our knowledge,this is the first urea-mediated“mix-heat”method for preparing 2D-nano-sandwiched carbon-metal-based(electro)*** Fe_(2)CuNiS_(4)/NGCNTs-SW was found to be highly effective for alkaline-mediated oxygen evolution reaction at low onset potential of 284.24 mV,and the stable current density of 10 mA cm^(−2) in 1.0 m KOH for 10 ***,the Fe_(2)CuNiS_(4)/NGCNTs-SW demonstrated excellent catalytic activity in the reduction of 4-nitrophenol with good kapp value of 87.71×10^(−2)s^(-1)and excellent reusability over five ***,the developed urea-mediated“mix-heat”method is highly efficient for the preparation of metal-nanoarchitectures anchored 2D-nano-sandwiched(electro)catalysts with high synergism,uniform dispersion and excellent metal-support interaction.

关键词： (electro)catalyst metal-sulfide nanoarchitectures mix-heat N-graphene/NCNTs synergistic effect urea

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Study of a water-soluble supramolecular complex of curcumin andβ-cyclodextrin polymer with electrochemical property and potential anti-cancer activity

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Chinese Chemical Letters 2022年第8期33卷 4043-4047页

作者： Wang Zhang Ping Xiao Liwei Lin Fang Guo Qingyue Wang Yuanzhe Piao Guowang Diao School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225002China Department of Applied Bioengineering Graduate School of Convergence Science and TechnologySeoul National UniversitySuwon 443-270Republic of Korea Shanghai Suni Biotechnology Development Co. Ltd.Shanghai 201300China Advanced Institutes of Convergence Technology Suwon 443-270Republic of Korea

As a member of the curcuminoid compound family,curcumin(Cur)has many interesting therapeutic ***,its low aqueous solubility and stability have resulted in poor bioavailability and restricted clinical *** on size matching,β-cyclodextrin polymer(β-CDP),with its hydrophilic polymer chains and hydrophobic cavities,can form an inclusion complex with *** improve the water solubility and stability of Cur,a simple and eco-friendly grinding method was designed to formβ-CDP inclusion *** to the Boltzmann-Hamel's method and Job's method,the molar ratio of theβ-CD unit inβ-CDP to Cur was determined to be 1:*** diffusion coefficient and diffusion activation energy of Cur-β-CDP were calculated in an electrochemical *** supramolecular complex worked well in vitro to inhibit the proliferation of hepatoma carcinoma cells ***,this method visibly reduced the undesirable side effects on normal cells,without weakening the anti-cancer activity of the *** expect that the obtained host-guest complex will provide a new approach for delivering natural drug molecules,having low water solubility.

关键词： Cyclodextrin polymer Curcumin Solubility Anti-cancer activity Supramolecular complex

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Seismic Vulnerability Analysis of Long Span Prestressed Concrete Continuous Rigid Frame Bridge

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Journal of Engineering science and technology Review 2022年第6期15卷 35-41页

作者： Hua, Luo Yongyan, Liang Jianqiang, Feng Bin, Li Wenjuan, Liu College of Civil Engineering and Architecture Hunan Institute of Science and Technology Yueyang414000 China Graduate School of Convergence Engineering Keimyung University 1095 Dalgubeol-daeroDalseo-gu Daegu42601 Korea Republic of

Bridges are critical links in a transportation network that are susceptible to seismic actions, their vulnerability assessment is essential for seismic risk assessment and mitigation. In order to explore the damage probability of long span prestressed concrete continuous rigid frame bridge in the event of earthquake, this study took the Longxi Jialing River Bridge as an example and presents seismic vulnerability assessment based on the incremental dynamic analysis method. Taking the curvature of the pier’s most unfavorable section as the damage index, the seismic vulnerability curve of the pier was established with peak acceleration(PGA) as the independent variable and the probability of the structure exceeding a specific damage state as the dependent variable. Results demonstrate that under the action of a near-field earthquake, when PGA =0.5 g, the failure probabilities of slight damage is 0.02926, the failure probabilities of moderate damage is 0.01823, and the failure probabilities of severe damage is 0.00075. When PGA = 1.0 g, the failure probabilities of slight damage is 0.672 and 0.597 for moderate damage, 0.20109 for severe damage, and 0.00484 for complete damage. Under the action of a far-field earthquake, when PGA = 0.5 g, the failure probability of slight damage is 0.00194, and the failure probability of moderate damage is 0.00101 along the span direction. When PGA = 1.0 g, the failure probability of slight damage is 0.04358, 0.02802 for moderate damage, and 0.00138 for serious damage along the span direction. The complete damage of the bridge hardly occurs. With the increase of intensity of an earthquake, the failure probability of the pier gradually increases. After entering the moderate damage stage, the pier has relatively good ductility. This study provides a good reference for the seismic design of similar bridges © 2022 school of science, IHU. All Rights Reserved.

关键词： Piers

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Multi-class Segmentation of Anatomical Structures Using Deep Learning in CBCT Images Containing Metal Artifacts

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Transactions of the Korean Institute of Electrical Engineers 2022年第1期71卷 253-260页

作者： Yang, Su Chun, Soyoung Kim, Dael Jeoun, Bo Soung Yoo, Jiyong Kang, Se-Ryong Choi, Min-Hyuk Kim, Jo-Eun Huh, Kyung-Hoe Lee, Sam-Sun Heo, Min-Suk Yi, Won-Jin Dept. of Applied Bioengineering Graduate School of Convergence Science and Technology Seoul National University Seoul Korea Republic of Interdisciplinary Program of Bioengineering Seoul National University Seoul Korea Republic of Dept. of Biomedical Radiation Sciences Graduate School of Convergence Science and Technology Seoul National University Seoul Korea Republic of Dept. of Oral and Maxillofacial Radiology Seoul National University Dental Hospital Seoul Korea Republic of Dept. of Oral and Maxillofacial Radiology School of Dentistry and Dental Research Institute Seoul National University Seoul Korea Republic of

In order to perform preoperative surgical planning, accurate segmentation of anatomical structures in cone-beam computed tomography (CBCT) images is required. However, this image segmentation is often impeded by metal artifacts, and it takes a lot of time due to morphological variability in patients. In this paper, we proposed a deep learning based automatic multi-calss segmentation method for anatomical structures in CBCT images containing metal artifacts. Four U-Net based deep learning models were used for anatomical structure segmentation. Each deep learning model was constructed by changing the encoder of U-Net architecture to the backbones (DenseNet121, VGGNet16, ResNet101, and EfficienNetB4). For training and testing our method, we used 20744 CBCT images containing metal artifacts from 30 patient datasets. Experimental results show that the segmentation performances of the mandible, midfacial bone, mandibular canal, and maxillary sinus were achieved F1 scores of , , , and using DenseNet121 with Tversky loss, respectively. Furthermore, our method was able to perform robust and accurate segmentation of anatomical structures in CBCT images containing metal artifacts. © 2022 Korean Institute of Electrical Engineers. All rights reserved.

关键词： Image segmentation

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Wearable Resonator for In-Vivo Electron Paramagnetic Resonance Tooth Dosimetry

SSRN

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SSRN 2024年

作者： Ye, Sung-Joon Koo, Chang Uk Oh, Jeonghun Choi, Kwon Program in Biomedical Radiation Sciences Department of Transdisciplinary Studies Graduate School of Convergence Science and Technology Seoul National University Seoul08826 Korea Republic of Research Institute for Convergence Science Graduate School of Convergence Science and Technology Seoul National University Seoul08826 Korea Republic of Department of Applied Bioengineering Graduate School of Convergence Science and Technology Seoul National University Seoul08826 Korea Republic of Advanced Institutes of Convergence Technology Seoul National University Suwon16229 Korea Republic of Biomedical Research Institute Seoul National University Hospital Seoul03080 Korea Republic of

Tooth radiation dosimetry using an in-vivo electron paramagnetic resonance (EPR) spectrometer serves as a triage method for victims in large-scale radiation emergencies, such as the Fukushima and Chernobyl accidents. However, the victim’s breathing and movement during in-vivo measurements cause signal loss and uncertainty in the radiation-induced signal (RIS). This study aims to address these issues by developing a wearable resonator for a tooth. Using ANSYS HFSS, the dimensions and configuration of an attachable surface coil were optimized by calculating the magnetic field distribution in the enamel volume of a 3D incisor model. The magnetic energy concentration on the tooth enamel was maximized by the attachable surface coil, which had a 5 mm inner diameter and a 0.7 mm trace width at a given microwave power. The configured wearable resonator produced a constant RIS amplitude with a ±2.0% variation from an exposed tooth sample, even with a 2 mm movement along the central axis. Additionally, secure fixation of the wearable resonator resulted in significant stability, showing a relatively low uncertainty of 1.2% in the RIS amplitude. The wearable resonator also achieved an ~8.4% increase in RIS amplitude by concentrating more magnetic energy on the tooth sample compared to a conventional rigid resonator. This enhancement improved the accuracy and sensitivity of in-vivo tooth dosimetry. In conjunction with an automatic control circuit (ACC), the wearable resonator acquired undistorted in-vivo EPR spectra, thereby significantly reducing the need for manual intervention to reset the device due to the in-vivo motion. This combination of the wearable resonator and ACC effectively established a motion compensation system for in-vivo EPR tooth *** in Biomedical Radiation sciences, Department of Transdisciplinary Studies, graduate school of convergence science and technology, Seoul National University, Seoul 08826, Republic of KoreabResearch Institute for Con

关键词： Dosimetry

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Investigation of manufacturing conditions of single roll rapidly solidified ribbon for anode materials of magnesium rechargeable batteries

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Keikinzoku/Journal of Japan Institute of Light Metals 2023年第11期73卷 537-544页

作者： Kirimoto, Yuichi Fuke, Kousuke Tsukeda, Tadayoshi Aida, Tetsuo Nemoto, Yasunori Ikeda, Minoru Tabata, Hironobu Kurihara, Hideki Suzuki, Mayumi Department of Nano and Functional Material Science Graduate School of Science and Engineering for Education University of Toyama 3190 Gofuku Toyama-shi-shiToyama Toyama930-8555 Japan Program of Materials Science and Engineering Studies in Science and Engineering Graduate School of Science and Engineering University of Toyama Toyama-shi-shiToyama Toyama Japan Faculty of Sustainable Design Academic Assembly University of Toyama Toyama-shi Toyama-shi-shiToyama Toyama Japan FLOW Science JAPAN Shizuoka Hamamatsu-shi Japan CHUETSU METAL WORKS CO. LTD Nakaniikawa-gun Toyama Japan Saitama Industrial Technology Center Saitama Kawaguchi-shi Japan Department of Mechanical Systems Engineering Faculty of Engineering Toyama Prefectural University Imizu-shi Toyama Japan

Magnesium rechargeable batteries are attracting attention as next-generation rechargeable batteries because of their resource abundance, cost, safety, and high electrical capacity per volume compared to conventional lithium-ion rechargeable batteries. Our joint research team focused not only on the electrochemically active magnesium composition of ribbon for the negative electrode materials of magnesium rechargeable batteries but also on the production process, focused on the single roll type liquid quenching and rapid solidification method, which can be produced at a lower cost. In this study, the optimal processing conditions were examined by comparing CAE analysis with ribbon actually manufactured, with the aim of further improving manufacturing conditions using the same method, such as length discontinuities, thickness, and surface properties of ribbon. We specifically various process parameters such as injection pressure and roll peripheral speed for evaluation. As a result, several linear cracks were observed on the surface of the ribbon as the peripheral speed increased and as the Gap became wider, and the surface properties tended to deteriorate. Also, It was found that the dominant factor in the length of the ribbon was the peripheral speed. As the peripheral speed increased, the length of the ribbon tended to increase. © 2023 Japan Institute of Light Metals. All rights reserved.

关键词： Surface properties

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A conformal titanyl phosphate amorphous overlayer for enhancing photoelectrochemical hydrogen peroxide production

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Journal of Energy Chemistry 2023年第11期86卷 399-408,I0009页

作者： Jaekyum Kim Young Eun Kim Minyeong Je Won Tae Hong Chang-Lyoul Lee Tae-Hoon Kim Sung Min Cho Chang Hyuck Choi Heechae Choi Woo-Seok Choe Jung Kyu Kim School of Chemical Engineering Sungkyunkwan University(SKKU)Suwon 16419Republic of Korea SKKU Advanced Institute of Nano Technology(SAINT) Sungkyunkwan University(SKKU)Suwon 16419Republic of Korea Theoretical Materials&Chemistry Group Institute of Inorganic ChemistryUniversity of CologneGreinstr.650939CologneGermany Advanced Photonics Research Institute(APRI) Gwangju Institute of Science and Technology(GIST)Gwangju 61005Republic of Korea Department of Materials Science and Engineering Chonnam National UniversityGwangju 61186Republic of Korea Department of Chemistry Pohang University of Science and Technology(POSTECH)Pohang 37673Republic of Korea Institute for Convergence Research and Education in Advanced Technology(I-CREATE) Yonsei UniversitySeoul 03722Republic of Korea Department of Chemistry Xi’an Jiaotong-Liverpool UniversitySuzhou 215123JiangsuChina

Photoelectrochemical(PEC)H_(2)O_(2)production through water oxidation reaction(WOR)is a promising strategy,however,designing highly efficient and selective photoanode materials remains challenging due to competitive reaction ***,for highly enhanced PEC H_(2)O_(2)production,we present a conformal amorphous titanyl phosphate(a-TP)overlayer on nanoparticulate TiO_(2)surfaces,achieved via lysozyme-molded in-situ surface *** a-TP overlayer modulates surface adsorption energies for reaction intermediates,favoring WOR for H_(2)O_(2)production over the competing O_(2)evolution *** density functional theory calculations reveal that a-TP/TiO_(2)exhibits a substantial energy uphill for the O·*formation pathway,which disfavors O_(2)evolution but promotes H_(2)O_(2)***,the a-TP overlayer strengthens the built-in electric field,resulting in favorable ***,a-TP/TiO_(2)exhibits 3.7-fold higher Faraday efficiency(FE)of 63%at 1.76 V *** hydrogen electrode(RHE)under 1 sun illumination,compared to bare TiO_(2)(17%),representing the highest FE among TiO_(2)-based WOR H_(2)O_(2)production *** the a-TP overlayer constitutes a promising strategy for controlling reaction pathways and achieving efficient solar-to-chemical energy conversion.

关键词： Solar H_(2)O_(2) production In-situ surface reforming Titanyl phosphate Amorphous overlayer Reaction pathway control

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Implementation and Evaluation of 0.6 µm CMOS Complex RCPF for Accurate Frequency Response Measurement

IEEJ Transactions on Electronics, Information and Systems

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IEEJ Transactions on Electronics, Information and Systems 2025年第1期145卷 25-37页

作者： Sato, Lina Fukagawa, Kanta Shouno, Kazuhiro Tanimoto, Hiroshi Muto, Cosy Moriyama, Seijiro Takahashi, Chikau Yoshino, Michitaka Graduate School of Science and Technology Degree Programs in Systems and Information Engineering Master’s Program in Computer Science University of Tsukuba Japan Division of Information Engineering University of Tsukuba 1-1-1 Tennoudai Ibaraki Tsukuba305-8573 Japan Kitami Institute of Technology 165 Koen-cho Hokkaido Kitami090-8507 Japan Faculty of Education Nagasaki University 1-14 Bunkyo-machi Nagasaki852-8521 Japan Anagix Corporation 3-22-27 Numama Kanagawa Zushi249-0004 Japan Takamori Corporation Japan Research Center for Micro-Nano Technology Hosei University 3-11-15 Midori-cho Koganei Tokyo184-0003 Japan

This paper describes the implementation and evaluation of an RC polyphase filter (RCPF) and circuitry for measuring its frequency characteristics. The integrated circuit is fabricated on a 0.6 µm CMOS process and its supply voltage is 5 V. The integrated circuit includes a filter under test (FUT), a four-phase square wave generator, several analog switches and differential amplifiers to amplify the high-impedance signals of the RCPF. This FUT is a third-order complex RCPF whose passband is 8 − 40 MHz. This paper describes the design of these circuits in detail. This integrated circuit can select two measurement methods by means of external control signals. The first method uses a four-phase square wave. The frequency characteristics are measured by using an on-chip four-phase square wave generator driven by an external clock generator and by a spectrum analyzer tuned to the fundamental frequency. The second method uses an external network analyzer. Furthermore, this integrated circuit is equipped with a calibration circuit to measure the frequency characteristics of the circuitry except FUT by passing through the input / output signals of the FUT. As a result, the frequency characteristics of the FUT itself can be accurately measured. The effectiveness is confirmed through evaluation of the fabricated integrated circuit. © 2025 The Institute of Electrical Engineers of Japan.

关键词： Differential amplifiers

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