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Promotion of grain growth via solvent fumigation for wide-bandgap perovskite solar cells with low VOC deficit and perovskite/TOPcon tandem solar cells with efficiency >30

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Science bulletin 2025年

作者： Xiang Liao Yuanfang Zhang Zijian Qu Qiang Zeng Mingjun Zhang Jungan Wang Yining Pan Jie Yang damin Zheng Zengsheng Liu Linhong Li Menglei Xu Xinyu Zhang Fangyang Liu School of Metallurgy and Environment Central South University Changsha 410083 China Engineering Research Centre of Advanced Battery Materials Ministry of Education Central South University Changsha 410083 China. Zhejiang Jinko Solar Co. Ltd. Jiaxing 314416 China. Engineering Research Centre of Advanced Battery Materials Ministry of Education Central South University Changsha 410083 China National Energy Metal Resources and New Materials Key Laboratory Central South University Changsha 410083 China. Electronic address: qiang.zeng@***. Zhejiang Jinko Solar Co. Ltd. Jiaxing 314416 China Zhejiang Key Laboratory of Advanced Tandem Photovoltaic Technology Jiaxing 314416 China. National Energy Metal Resources and New Materials Key Laboratory Central South University Changsha 410083 China. Redsolar Central R&D Institute Redsolar New Energy Technology Co. Ltd. Changsha 410205 China. School of Metallurgy and Environment Central South University Changsha 410083 China. Zhejiang Key Laboratory of Advanced Tandem Photovoltaic Technology Jiaxing 314416 China. Electronic address: menglei.xu@***. National Energy Metal Resources and New Materials Key Laboratory Central South University Changsha 410083 China. Electronic address: liufangyang@***.

In perovskite solar cells (PSCs) with a wide bandgap (E ≥ 1.65 eV), mixed halides generate poor-quality perovskite films and lead to a low power conversion efficiency (PCE) due to uncontrolled fast perovskite crystallization. Herein, we propose a strategy to regulate the grain growth of perovskite wet films by fumigating them in a dimethyl sulfoxide (dMSO) atmosphere. due to the better coordination of dMSO with lead halides and organic halides, dMSO fumigation effectively prolongs the existence time of intermediate phases, which slows the crystallization of perovskites, generating perovskite films with large grains and a low defect density. Such high-quality perovskite films were used to fabricate 1.65-eV- and 1.68-eV-bandgap PSCs, which achieved champion PCEs of 23.19% and 22.38%, respectively. The former PSC showed a V deficit of 0.391 V, representing one of the state-of-the-art performances for this bandgap. Monolithic perovskite/tunnelling oxide passivating contact (TOPcon) tandem solar cells (TSCs) were also fabricated using the optimized PSCs as front cells, achieving a champion PCE of 30.9% (certified 30.83%). This study demonstrates an easy-to-operate and effective approach to realize high-performance wide-bandgap PSCs and perovskite/TOPcon TSCs.

关键词： Fumigation Grain growth Tandem solar cells Wide-bandgap perovskites

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Analysis and Impact of Shocking Characteristic in Ultra- fast disconnecting Switch of Hybrid HVdC Breaker

Analysis and Impact of Shocking Characteristic in Ultra- fas...

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IEEE Electronic Power Grid (eGrid)

作者： Xiaolong Zhang Zhixiang Wang Zhuang Li Chong Gao Hongzhou Luan Ning Zhang HVDC Center State Key Laboratory of Advanced Power Transmission Technology Global Energy Interconnection Research Institute Co.Ltd. Beijing China Engineering Center C-EPRI Electric Power Engineering Co.Ltd. Beijing China R&D Center C-EPRI Electric Power Engineering Co.Ltd. Beijing China

ISBN: (数字)9781728157047

ISBN: (纸本)9781728157054

Ultra-fast disconnecting switch is one of the key components in hybrid HVdC circuit breaker. during ultra-fast disconnecting action, a considerable shock to the supporting structure will be produced by the internal moving parts of ultrafast disconnecting switch. In this paper, the movement process of the moving parts within ultra-fast disconnecting switch is described, and the shocking characteristic of ultra-fast disconnecting switch is studied using experimental method. The maximum instantaneous impact force reaches 102kN. In order to reduce the impact of ultra-fast disconnecting switch on supporting structure of HVdC circuit breaker, damping isolators are applied. results of simulation analyses and experiments show that both stress and vibration amplitude have been improved obviously because of the application of damping isolators.

关键词： Switches Force HVdC transmission Isolators damping Circuit breakers Switching circuits

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Effect of rotor length on generating power in horizontal axis wind turbines

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IOP conference Series: Earth and Environmental Science 2020年第1期463卷

作者： Navid Majdi Nasab Jeff Kilby Leila Bakhtiaryfard Dept of Electrical & Electronic Engineering Auckland University of Technology Auckland New Zealand Technology Research Development R&D Center Fusheng Industrial Co. Ltd Taipei Taiwan (R.O.C)

The benefits of the rotor design are optimizing power generation and reducing cost of build in wind turbines. In this study, a performance comparison of horizontal axis wind turbines in terms of their rotor diameter is made using Qblade software. The airfoil selected is the National Advisory committee for Aeronautics (NACA 0012) for all models, and the wind turbines have three blades. From simulations, the optimal rpm for each rotor diameter was calculated, and the generated power for different wind speeds. The results found show that the operation of wind turbines consider need operated with tip speed ratios of between 4 to 7 to give optimal power output. Maximum power was produced for a blade diameter of 170 metres and the highest power coefficient found was for a diameter of 30 metres and for this case also had the highest tip speed ratio of 6.68. Overall results can suggest which diameter range is used for choosing a rotor size that is the most cost-effective.

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HErOHE Challenge: Assessing HEr2 status in breast cancer without immunohistochemistry or in situ hybridization

arXiv

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arXiv 2021年

作者： conde-Sousa, Eduardo Vale, João Feng, Ming Xu, Kele Wang, Yin Mea, Vincenzo della Barbera, david La Montahaei, Ehsan Baghshah, Mahdieh Soleymani Turzynski, Andreas Gildenblat, Jacob Klaiman, Eldad Hong, Yiyu Aresta, Guilherme Araújo, Teresa Aguiar, Paulo Eloy, Catarina Polónia, António I3S - Instituto de Investigação e Inovação em Saúde Universidade Do Porto Portugal INEB - Instituto de Engenharia Biomédica Universidade Do Porto Portugal Department of Pathology Ipatimup Diagnostics Institute of Molecular Pathology and Immunology University of Porto Tongji University Shanghai China National University of Defense Technology Changsha China Department of Mathematics Computer Science and Physics University of Udine Udine Italy Sharif University of Technology Tehran Iran Computer Engineering Department Sharif University of Technology Tehran Iran Private Group Practice for Pathology Lübeck Germany DeePathology Hatidhar 5 Raanana Israel Roche Diagnostics GmbH Nonnenwald 2 Penzberg82377 Germany Department of R&D Center Arontier Co. Ltd Seoul Korea Republic of INESC TEC - Institute for Systems and Computer Engineering Technology and Science Porto Portugal FEUP - Faculty of Engineering University of Porto Porto Portugal FMUP - Faculty of Medicine University of Porto Porto Portugal INEB/i3S Rua Alfredo Allen 208 Porto4200-135 Portugal

Breast cancer is the most common malignancy in women, being responsible for more than half a million deaths every year. As such, early and accurate diagnosis is of paramount importance. Human expertise is required to diagnose and correctly classify breast cancer and define appropriate therapy, which depends on the evaluation of the expression of different biomarkers such as the transmembrane protein receptor HEr2. This evaluation requires several steps, including special techniques such as immunohistochemistry or in situ hybridization to assess HEr2 status. With the goal of reducing the number of steps and human bias in diagnosis, the HErOHE Challenge was organized, as a parallel event of the 16th European congress on digital Pathology, aiming to automate the assessment of the HEr2 status based only on hematoxylin and eosin stained tissue sample of invasive breast cancer. Methods to assess HEr2 status were presented by 21 teams worldwide and the results achieved by some of the proposed methods open potential perspectives to advance the state-of-the-art. © 2021, CC BY.

关键词： diseases

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Optimized Wake-up Scheme with Bounded delay for Energy-Efficient MTC

Optimized Wake-up Scheme with Bounded Delay for Energy-Effic...

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IEEE Global communications conference

作者： Soheil rostami Sandra Lagen Mario costa Paolo dini Mikko Valkama Huawei Technologies Oy (Finland) Co. Ltd Helsinki R&D Center Centre Tecnològic de Telecomunicacions de Catalunya (CTTC/CERCA) Barcelona Spain Huawei Technologies Oy (Finland) Co. Ltd Department of Electronics and Communications Engineering Tampere University of Technology Finland

ISBN: (数字)9781728109626

ISBN: (纸本)9781728109633

The limitations of state-of-the-art cellular modems prevent achieving low-power and low-latency Machine Type communications (MTC) based on current power saving mechanisms alone. recently, the concept of wake-up scheme has been proposed to enhance battery lifetime of 5G devices, while reducing the buffering delay. The existing wake-up algorithms use static operational parameters that are determined by the radio access network at the start of the user's session. In this paper, the average power consumption of the wake-up enabled MTC UE is modeled by using a semi-Markov process and then optimized through a delay-constrained optimization problem, by which the optimal wake-up cycle is obtained in closed form. Numerical results show that the proposed solution reduces the power consumption of an optimized discontinuous reception (drX) scheme by up to 40% for a given delay requirement.

关键词： delays Power demand Energy consumption Mathematical model Modems 5G mobile communication Numerical models

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corrigendum to "physicochemical properties, structural analysis, and activity of Shancigu polysaccharides" [Int. J. Biol. Macromol. 298 (2025) 140071]

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International journal of biological macromolecules 2025年 312卷 144334页

作者： Yun Liu Jie Xu Chiyu Ge Tiantian Zhang Hongyi Chu Yi Jing Zhimeng Xu Guoyong Xie Jun Yuan Jiangsu Key Laboratory of Regional Specific Resource Pharmaceutical Transformation Huaiyin Institute of Technology Huai'an 223003 China National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization Huaiyin Institute of Technology Huai'an 223003 China. Department of Resources Science of Traditional Chinese Medicines School of Traditional Chinese Pharmacy China Pharmaceutical University Nanjing 210009 China School of Pharmacy Jiangsu Food and Pharmaceutical Science College Huai'an 223005 China. Department of Food Nutrition and Safety/National R&D Center for Chinese Herbal Medicine Processing School of Engineering China Pharmaceutical University Nanjing 211198 China. Department of Chinese herbal medicinal resources Tianjiang Pharmaceutical Co. Ltd. Jiangyin 214400 China. Department of Resources Science of Traditional Chinese Medicines School of Traditional Chinese Pharmacy China Pharmaceutical University Nanjing 210009 China. Electronic address: guoyongxie321@***. National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization Huaiyin Institute of Technology Huai'an 223003 China. Electronic address: yuanj_hyit@***.

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Sliding Mode control Method of Photoelectric Turntable Based on LuGre Friction Model

Sliding Mode Control Method of Photoelectric Turntable Based...

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International conference on Electrical Machines and Systems (ICEMS)

作者： Ninghao Cui Qian Zhang Qunjing Wang Zhenglei Ma Jianjun Chen deyin Lin Institute of Electrical Engineering and Automation Chemistry Anhui University Hefei China National Engineering Laboratory of Energy-Saving Motor & Control Technology Anhui University Hefei China Collaborative Innovation Center of Industrial Energy-Saving and Power Quality Control Anhui University Hefei China R&D Department Shanghai Yingjue Technology Co. Ltd. Shanghai China Nanjing EXSCIN Information Technology CO. Ltd. Nanjing China Shanghai Yingjue Technology Co. Ltd. Shanghai China

ISBN: (纸本)9781728133997

Nonlinear friction is one of the main factors affecting the performance of the photoelectric turntable. In this paper, a sliding mode controller based on LuGre friction model is proposed in the servo system of photoelectric turntable. Firstly, the friction model is established and the parameters of the model are identified by genetic algorithm. Secondly, the model-based nonlinear disturbance observer is constructed to estimate the friction and other disturbances. Finally, a sliding mode controller is designed to ensure the tracking error and accuracy of the system. The simulation results show that this method is able to reduce the tracking error and improve the tracking performance of the system.

关键词： Friction Sliding mode control Servomotors disturbance observers Mathematical model Torque

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Structural design of Prefabricated Sidewalk in Sponge City

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IOP conference Series: Materials Science and engineering 2020年第1期964卷

作者： Xuejun Wen Ming Huang Vice-Chief Engineer Shanghai Municipal Engineering Design Institute (Group) Co. Ltd. Shanghai 200092 China Senior Engineer(R&D) PhD Postdoctoral Greenland Infrastructure Group Co. Ltd. Shanghai 200010 China Senior Engineer(R&D) PhD Postdoctoral GIG Technology Research Institute Shanghai 200010 China

In the traditional pavement design, rainwater is mainly discharged by surface runoff, and in the structural design, the key point is the pavement waterproof. Therefore, the traditional sidewalk design is inconsistent with the requirements of sponge city. The research basis of this paper comes from a field engineering, the structural parameters of prefabricated sidewalk and the corresponding design methods are studied and summarized. The structural function of sidewalk is realized by superposition and combination of each structural layer. For the realization of prefabricated sponge sidewalk technology, the function of each structural layer must be fully considered, and the function of each structural layer should be designed and combined according to the design purpose. The results show that, by discussing the function of each layer of prefabricated sidewalk, the structural layer of prefabricated sidewalk is preliminarily determined(see Figure 2 in main text); according to the strength requirements and water permeability requirements of the structure, the thickness range of the structural layer is 13.11cm-21.3cm; finally, the relationship between plate thickness and critical position load, temperature fatigue stress, and finally determines the thickness of precast cement concrete slab is 15cm.

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design and Simulation of the controller for Pneumatic Self-Balancing Hoist System

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IOP conference Series: Materials Science and engineering 2020年第1期717卷

作者： Liang Yang Peng Yin rong Yin School of Mechanical and Automotive Engineering South China University of Technology Guangzhou 510640 China R&D Department Guangzhou Hyetone Electromechanical Equipment Co. Ltd. Guangzhou 510407 China

The design of the controller of the pneumatic hoist system is the most important step in the whole work process. The quality of the design of the controller is directly related to the realization of the system. This paper elaborates the detailed design of the system in a few steps. Firstly, a set of optimal control parameters kp*, ki*, and kd* are selected. Then the fuzzy self-tuning PId controller is designed for the valve-controlled cylinder system. Finally, the response characteristic simulation of the fuzzy self-tuning PId controller is designed based on Matlab/Simulink platform. From the result and analysis, it can be seen from the simulation results that through the adjustment of the fuzzy self-tuning PId controller, the system adjustment time ts are within 0.8s, and the steady-state error rate is controlled within 3%.

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coNIC Challenge: Pushing the Frontiers of Nuclear detection, Segmentation, Classification and counting

arXiv

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arXiv 2023年

作者： Graham, Simon Vu, Quoc dang Jahanifar, Mostafa Weigert, Martin Schmidt, Uwe Zhang, Wenhua Zhang, Jun Yang, Sen Xiang, Jinxi Wang, Xiyue rumberger, Josef Lorenz Baumann, Elias Hirsch, Peter Liu, Lihao Hong, Chenyang Aviles-rivero, Angelica I. Jain, Ayushi Ahn, Heeyoung Hong, Yiyu Azzuni, Hussam Xu, Min Yaqub, Mohammad Blache, Marie-Claire Piégu, Benoît Vernay, Bertrand Scherr, Tim Böhland, Moritz Löffler, Katharina Li, Jiachen Ying, Weiqin Wang, Chixin Snead, david raza, Shan E. Ahmed Minhas, Fayyaz rajpoot, Nasir M. Tissue Image Analytics Centre University of Warwick Coventry United Kingdom Histofy Ltd Birmingham United Kingdom Institute of Bioengineering School of Life Sciences Epfl Lausanne Switzerland Dresden Germany The Department of Computer Science The University of Hong Kong Hong Kong Tencent Ai Lab Shenzhen China College of Biomedical Engineering Sichuan University Chengdu China Department of Precision Instruments Tsinghua University Beijing China College of Computer Science Sichuan University Chengdu China Max-Delbrueck-Center for Molecular Medicine in the Helmholtz Association Berlin Germany Humboldt University of Berlin Faculty of Mathematics and Natural Sciences Berlin Germany Charité University Medicine Berlin Germany University of Bern Bern Switzerland Department of Applied Mathematics and Theoretical Physics University of Cambridge United Kingdom Department of Computer Science and Engineering Chinese University of Hong Kong Hong Kong Softsensor.ai BridgewaterNJ United States PRR.ai TX United States Department of R&d Center Arontier Co. Ltd Seoul Korea Republic of Computer Vision Department Mohamed Bin Zayed University of Artificial Intelligence Abu Dhabi United Arab Emirates Cnrs Ifce Inrae Université de Tours Prc Nouzilly3780 France Institut de Génétique et de Biologie Moléculaire et Cellulaire Illkirch France Centre National de la Recherche Scientifique UMR7104 Illkirch France Institut National de la Santé et de la Recherche Médicale Inserm U1258 Illkirch France Université de Strasbourg Strasbourg France Institute for Automation and Applied Informatics Karlsruhe Institute of Technology Eggenstein-Leopoldshafen Germany School of Software Engineering South China University of Technology Guangzhou China Department of Pathology University Hospitals Coventry Warwickshire Nhs Trust Coventry United Kingdom Division of Biomedical Sciences Warwick Medical School University of Warwick Coventry United Kingdom

Nuclear detection, segmentation and morphometric profiling are essential in helping us further understand the relationship between histology and patient outcome. To drive innovation in this area, we setup a community-wide challenge using the largest available dataset of its kind to assess nuclear segmentation and cellular composition. Our challenge, named coNIC, stimulated the development of reproducible algorithms for cellular recognition with real-time result inspection on public leaderboards. We conducted an extensive post-challenge analysis based on the top-performing models using 1,658 whole-slide images of colon tissue. With around 700 million detected nuclei per model, associated features were used for dysplasia grading and survival analysis, where we demonstrated that the challenge's improvement over the previous state-of-the-art led to significant boosts in downstream performance. Our findings also suggest that eosinophils and neutrophils play an important role in the tumour microevironment. We release challenge models and WSI-level results to foster the development of further methods for biomarker discovery. © 2023, CC BY-NC-SA.

关键词： Grading

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