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Textile Bioengineering and Informatics Symposium Proceedings, TBIS 2024年 2024-August卷

作者： Zhu, Meifang State Key Laboratory for Modification of Chemical Fibers and Polymer Materials China College of Materials Science and Engineering Donghua University China Innovation Base of Advanced Fabrication Technology of Fiber Materials China

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Enhanced Photocatalytic H_(2)-production Activity of CdS Nanoflower using Single Atom Pt and Graphene Quantum Dot as Dual Cocatalysts

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Chinese Journal of Structural Chemistry 2022年第6期41卷 6-14页

作者： Yi Yang Jinsong Wu Bei Cheng Liuyang Zhang Ahmed Abdullah Al-Ghamdi Swelm Wageh Youji Li State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Nanostructure Research Centre(NRC)Wuhan University of TechnologyWuhan 430070China Laboratory of Solar Fuel Faculty of Materials Science and ChemistryChina University of GeosciencesWuhan 430074China Department of Physics Faculty of ScienceKing Abdulaziz UniversityJeddah 21589Saudi Arabia College of Chemistry and Chemical engineering Jishou UniversityJishouHunan 416000China

Single-atom catalysts have high catalytic activity due to their unique quantum size effects and optimal atom ***,visi-ble-light-responsive photocatalysts were designed by coupling CdS with graphene quantum dots(GQDs)and platinum single atoms(PtSAs).GQDs and PtSAs were successively loaded on ultrathin CdS nanosheets through freeze-drying and in-situ photocatalytic *** synergistic effect between PtSAs and GQDs results in superior photocatalytic activity with a hydrogen production rate of 13488μmol h^(-1)g^(-1)as well as the maximum apparent quantum efficiency(AQE)of 35.5%in lactic acid aqueous solution,which is 62 times higher than that of pristine CdS(213μmol g^(-1)h^(-1)).The energy conversion efficiency is ca.13.05%.As a photosensitizer and an electron reservoir,GQDs can not only extend the light response of CdS to the visible-light region(400-800 nm),but also promotes the separation of photoinduced electron-hole ***,PtSAs,with unique electronic and geometric features,can provide more efficient proton reduction *** finding provides an effective strategy to remarkably improve the photocatalytic H_(2) production performance.

关键词： hierarchical nanostructure single-atom catalysts graphene quantum dots CdS nanosheets hydrogen production

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Learnable Topology Enhanced Heterogeneous Network for Unbalanced Cross-Domain Fault Diagnosis

Learnable Topology Enhanced Heterogeneous Network for Unbala...

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International Conference on Sensing, Diagnostics, Prognostics, and Control (SDPC)

作者： Zixu Chen Wennian Yu Qing Ni Jinchen Ji State Key Laboratory of Mechanical Transmission for Advanced Equipment Chongqing University Chongqing China School of Mechanical and Mechatronic Engineering University of Technology Sydney Sydney Australia

ISBN: (数字)9798350388855

ISBN: (纸本)9798350388862

The emerging graph convolutional networks (GCN) have led to their widespread application in fault diagnosis due to their advantages in feature extraction. However, there are still some limitations of the GCN-based methods in the face of cross-domain diagnostic tasks. First, in most of the existing studies, the graph topology is constructed according to certain criteria. However, the fixed topology may contain domain-specific information, which could hinder the extraction of domain-invariant features. Second, the class unbalanced data would lead to training bias, degrading the diagnostic performance for the minority classes of data. In order to address the challenges posed by these limitations to cross-domain diagnostics, this paper proposed a learnable topology enhanced heterogeneous network (LTHN). First, a learnable topology-aware module is designed to update the multi-sensor graph topology and augment the unbalanced data in a non-parametric manner. Then, a fault detection induced binary classifier and a fine-grained classification induced multi-class classifier form a heterogeneous network, which is able to avoid biased training by reweighting the data according to the pairwise heterogeneous inferences. Finally, the multi-class classifier output the diagnostic result. Cross-domain diagnostic experiments were conducted on the constructed sliding bearing test rig. Comparative studies with the state-of-the-art methods showed the effectiveness and the superiority of the proposed method.

关键词： Training Fault diagnosis Network topology Graph convolutional networks Fault detection Feature extraction Heterogeneous networks Topology Sensors Faces

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electromagnetic Analysis of Metamaterial Absorber Using Finite Element/Boundary Element Method

Electromagnetic Analysis of Metamaterial Absorber Using Fini...

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International Conference on Vacuum Electronics

作者： Bingqi Liu Li Xu Hao Wang Hangxin Liu Honghai Fan Bin Li National Key Laboratory of Science and Technology on Vacuum Electronics Key Laboratory of Large-Scale Electromagnetic Industrial Software Ministry of Education School of Electronic Science and Engineering University of Electronic Science and Technology of China Chengdu P.R.China Shenzhen Institute for Advanced Study UESTC Shenzhen P.R.China

ISBN: (数字)9798350348705

ISBN: (纸本)9798350348712

Metamaterial absorber is a kind of metamaterial that has a great application prospect in electric vacuum devices. In the design of metamaterial absorbers, electromagnetic simulation is a more efficient and cost-effective method. The FEM/BEM combines the advantages of FEM and IE method and especially suitable for the simulation of metamaterial absorbers. In this paper, we developed an electromagnetic simulator based on the domain decomposition based FEM/BEM method for the analysis of metamaterial absorbers. The numerical analysis shows that the simulator is accurate and practicable for simulation of metamaterial absorber.

关键词： Accuracy Metals Boundary conditions Metamaterials Mathematical models Finite element analysis electromagnetic analysis Vacuum electronics Matrix decomposition Electron sources

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Semiconductor Stable Quantum Rods for Liquid Crystal Display mini-LED Backlight

Semiconductor Stable Quantum Rods for Liquid Crystal Display...

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The 2023 International Conference on Display technology, (ICDT 2023)

作者： Kang, Chengbin Prodanov, Maksym F. Song, Jianxin Gao, Yiyang Mallem, Kumar Vashchenko, Valerii V. Srivastava, Abhishek K. State Key Laboratory of Advanced Displays and Optoelectronics Technologies and Centre for Display Research Electronics and Computer Engineering Department The Hong Kong University of Science and Technology Clear Water Bay Hong Kong IAS Center for Quantum Technologies The Hong Kong University of Science and Technology Clear Water Bay Hong Kong

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Sinusoidal and nonsinusoidal patterns in amplitude envelope synchronization

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Physical Review E 2022年第4期105卷 044209-044209页

作者： Hanchang Liu Weiqing Liu Chaoxin Fu Meng Zhan School of Science Jiangxi University of Science and Technology Ganzhou 341000 China School of Electronic Information and Communications Huazhong University of Science and Technology Wuhan 430074 China State Key Laboratory of Advanced Electromagnetic Engineering and Technology and School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan 430074 China

In this work, amplitude envelope synchronization (AES), as a general phenomenon characterized with highly correlated amplitude envelope but uncorrelated phases and frequencies in coupled nonidentical nonlinear systems, is investigated theoretically and numerically. Two different types of AES patterns, including sinusoidal and nonsinusoidal, are widely observable in coupled periodic and/or chaotic oscillators. They both come from modulation of phase mismatch on amplitude but show different patterns due to different behaviors of phase mismatch. With increase of frequency mismatch, the system tends to crossover from nonsinusoidal to sinusoidal AES. With the aid of synchronization manifold and transverse stability analyses of the AES state, the physical mechanism and scale relations for the AES are well revealed. We expect that all these results could uncover the generality of AES in coupled nonlinear oscillators and help to understand the rich dynamics of phase and amplitude coupling in multidisciplinary fields.

关键词： Coupled oscillators Synchronization

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A Simple Green Method for In-Situ Selective Extraction of Li from Spent Lifepo4 Batteries by Synergistic Effect of Deep-Eutectic Solvent and Ozone

SSRN

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SSRN 2023年

作者： Tang, Shujie Yang, Ziyue Zhang, Mei Guo, Min State Key Laboratory of Advanced Metallurgy School of Metallurgical and Ecological Engineering University of Science and Technology Beijing Beijing100083 China

Efficient and clean extraction lithium (Li) from spent LiFePO4 batteries (LIBs) still remains a challenge. In this paper, a green deep eutectic solvent (DES) based on ethylene glycol (EG) and choline chloride (CC), combined with ozone (O3) from air source, realized highly selective leaching Li from LiFePO4 in situ for the first time. The influence of experimental parameters on Li and Fe leaching efficiencies (ηLi, ηFe) were studied by orthogonal and single-factor tests, and ηLi≥92.2% while ηFe≤1.6% were obtained under the optimal conditions (6 h, 20 g/L, 8EG:1CC, 40 oC). The impurity Fe in the filtrate was completely precipitated as amorphous FePO4·3H2O after heating (150 oC, 0.5 h), achieving a pure Li-solution. The leaching mechanism elucidated that the synergistic effect (acidification, replacement and oxidation reaction) between the DES and O3 determined the phase transition of Li and Fe, promoting the efficient selective extraction of Li and in-situ separation of Fe (FePO4). The average ηLi and ηFe were separately 85.4% and 2.0% after ten cycles of the 8EG:1CC, indictive of its’ excellent reusability, and LiCl was recovery from filtrate. This process avoids the use of strong acid/alkali and the generation of waste water, providing fresh perspectives on the green recovery of spent LiFePO4 LIBs. © 2023, The Authors. All rights reserved.

关键词： Recovery

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Secondary crystallization strategy for highly efficient inorganic CsPbI_(2)Br perovskite solar cells with efficiency approaching 17%

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Journal of Energy Chemistry 2021年第12期30卷 558-565,I0013页

作者： Jing Ma Zhenhua Lin Xing Guo Long Zhou Jian He Zhou Yang Jincheng Zhang Yue Hao Shengzhong Liu Jingjing Chang State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology Shaanxi Joint Key Laboratory of GrapheneSchool of MicroelectronicsXidian University2 South Taibai RoadXi’an 710071ShaanxiChina Advanced Interdisciplinary Research Center for Flexible Electronics Xidian University2 South Taibai RoadXi’an 710071ShaanxiChina Key Laboratory of Applied Surface and Colloid Chemistry National Ministry of Education Shaanxi Engineering Lab for Advanced Energy TechnologySchool of Materials Science and EngineeringShaanxi Normal UniversityXi’an 710119ShaanxiChina

Inorganic CsPbI_(2) Br perovskite solar cells(PSCs) have a tremendous development in last few years due to the trade-off between the excellent optoelectronic properties and the relatively outstanding ***,we demonstrated a strategy of secondary crystallization(SC) for CsPbI_(2) Br film in a facile planar n-i-p structure(ITO/ZnO-SnO_(2)/CsPbI_(2) Br/Spiro-OMeTAD/Ag) at low-temperature(150℃).It is achieved through the method of post-treatment with guanidinium bromine(GABr) atop annealed CsPbI_(2) Br *** was found that the secondary crystallization by GABr can not only regulate the crystal growth and passivate defects,but also serve as a charge collection center to effectively collect photogenerated *** addition,due to the excess Br ions in GABr,the formation of the Br-rich region at the CsPbI_(2) Br perovskite surface can further lower the Fermi level,leading to more beneficial band alignment between the perovskite and the hole transport layer(HTL),while the phase stability was also *** a result,the champion cell shows a superb open-circuit voltage(V_(oc)) of 1.31 V,a satisfactory power conversion efficiency(PCE) of 16.97% and outstanding *** far as we know,this should be one of the highest PCEs reported among all-inorganic CsPbI_(2) Br based PSCs.

关键词： CsPbI_(2)Br Low temperature Secondary crystallization High performance

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High-throughput and reliable acquisition of in vivo turnover number fuels precise metabolic engineering

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Synthetic and Systems Biotechnology 2022年第1期7卷 541-543页

作者： Zhenghong Li Chengyu Zhang Zhengduo Wang Hao Yan Chuan Li Zhiheng Yang Zilong Li Lixin Zhang Weishan Wang Shenzhen Institute of Synthetic Biology Shenzhen Institutes of Advanced TechnologyChinese Academy of Sciences518055ShenzhenChina State Key Laboratory of Microbial Resources Institute of MicrobiologyChinese Academy of SciencesBeijing100101China State Key Laboratory of Bioreactor Engineering And School of BiotechnologyEast China University of Science and Technology(ECUST)Shanghai200237China University of Chinese Academy of Sciences Beijing 100049China

As synthetic biology enters the era of quantitative biology,mathematical information such as kinetic parameters of enzymes can offer us an accurate knowledge of metabolism and growth of cells,and further guidance on precision metabolic engineering.k_(cat),termed the turnover number,is a basic parameter of enzymes that describes the maximum number of substrates converted to products each active site per unit *** reflects enzyme activity and is essential for quantitative understanding of ***,the k_(cat) values are measured in vitro,thus may not be able to reflect the enzyme activity in *** this case,Davidi et *** a surrogate K^(vivo)_(max)(k_(app))for kcat and developed a high throughput method to acquire K^(vivo)_(max)from omics *** et *** Chen et *** that the surrogate parameter can be a good embodiment of the physiological state of enzymes and exhibit superior performance for enzyme-constrained metabolic model to the default *** breakthroughs will fuel the development of system and synthetic biology.

关键词： Turnover number Genome scale models High throughput Metabolic reconstitution Machine learning

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Non-equivalent D-A copolymerization strategy towards highly efficient polymer donor for polymer solar cells

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Science China Chemistry 2021年第6期64卷 1031-1038页

作者： Ziya Shang Liuyang Zhou Chenkai Sun Lei Meng Wenbin Lai Jinyuan Zhang Wenchao Huang Yongfang Li Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China School of Chemical Science University of Chinese Academy of SciencesBeijing 100049China College of Chemistry Green Catalysis CenterZhengzhou UniversityZhengzhou 455001China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu Hydrogen ValleyFoshan 528216China Laboratory of Advanced Optoelectronic Materials College of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China

D-A copolymerization is a broadly utilized molecular design strategy to construct high efficiency photovoltaic materials for polymer solar cells(PSCs),and all the D-A copolymer donors reported till now are the alternate D-A copolymers with equal D-and ***,we first propose a non-equivalent D-A copolymerization strategy with unequal D-and A-units,and develop three novel non-equivalent D-A copolymer donors(PM6-D1,PM6-D2 and PM6-D3 with D/A unit ratio of 1.1:0.9,1.2:0.8 and1.3:0.7,respectively)by inserting more D units into the alternate D-A copolymer PM6 backbone to finely tune the physicochemical and photovoltaic properties of the *** three non-equivalent D-A copolymers show the down-shifted highest occupied molecular orbital(HOMO)energy levels,higher hole mobility,higher degree of molecular self-assembly and higher molecular crystallinity with the increase of D-unit ratio in comparison with the alternate D-A copolymer *** a result,all the three non-equivalent D-A copolymer-based PSCs with Y6 as acceptor achieve improved power conversion efficiency(PCE)with higher V_(oc),larger J_(sc)and higher FF ***,the PM6-D1:Y6 based PSC achieved a high PCE of17.71%,which is significantly higher than that(15.82%)of the PM6:Y6 based PSC and is one of the highest performances in the binary PSCs.

关键词： polymer solar cells conjugated polymer donor materials donor-acceptor copolymers non-equivalent D-A copolymerization

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