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Self-Supervised Plant Phenotyping by Combining Domain Adaptation with 3D Plant Model Simulations: Application to Wheat Leaf Counting at Seedling Stage

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Plant Phenomics 2023年第2期5卷 226-238页

作者： Yinglun Li Xiaohai Zhan Shouyang Liu Hao Lu Ruibo Jiang Wei Guo Scott Chapman Yufeng Ge Benoit de Solan Yanfeng Ding Frédéric Baret Plant Phenomics Research Centre Academy for Advanced Interdisciplinary StudiesJiangsu Collaborative Innovation Center for Modern Crop ProductionNanjing Agricultural UniversityNanjingChina Key Laboratory of Image Processing and Intelligent Control School of Artificial Intelligence and AutomationHuazhong University of Science and TechnologyWuhanChina Graduate School of Agricultural and Life Sciences The University of Tokyo1-1-1 Midori-choNishitokyo CityTokyoJapan School of Agriculture and Food Sciences The University of QueenslandSt.LuciaQueensland 4072Australia Department of Biological Systems Engineering University of Nebraska-LincolnLincolnNebraska 68583United States INRAE Avignon UniversitéUMR EMMAHUMT CAPTE228route de l’aérodrome-CS 4050984914 Avignon Cedex 9France ARVALIS Institut du Végétal 3 Rue Joseph et Marie Hackin75116 ParisFrance

The number of leaves at a given time is important to characterize plant growth and *** this work,we developed a high-throughput method to count the number of leaves by detecting leaf tips in RGB *** digital plant phenotyping platform was used to simulate a large and diverse dataset of RGB images and corresponding leaf tip labels of wheat plants at seedling stages(150,000 images with over 2 million labels).The realism of the images was then improved using domain adaptation methods before training deep learning *** results demonstrate the efficiency of the proposed method evaluated on a diverse test dataset,collecting measurements from 5 countries obtained under different environments,growth stages,and lighting conditions with different cameras(450 images with over 2,162 labels).Among the 6 combinations of deep learning models and domain adaptation techniques,the Faster-RCNN model with cycle-consistent generative adversarial network adaptation technique provided the best performance(R^(2)=0.94,root mean square error=8.7).Complementary studies show that it is essential to simulate images with sufficient realism(background,leaf texture,and lighting conditions)before applying domain adaptation ***,the spatial resolution should be better than 0.6 mm per pixel to identify leaf *** method is claimed to be self-supervised since no manual labeling is required for model *** self-supervised phenotyping approach developed here offers great potential for addressing a wide range of plant phenotyping *** trained networks are available at https://***/YinglunLi/Wheat-leaf-tip-detection.

关键词： Wheat seedling Plant

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Analysis of Tool Wear and Wear Mechanism in Dry Forming Milling for Rail Milling Train

Analysis of Tool Wear and Wear Mechanism in Dry Forming Mill...

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作者： Pan, Chao Gu, Xiaoshan Wang, Mulan Wang, Baosheng China Railway Shanghai Administration Group Nanjing EMU Department Nanjing210012 China Jiangsu Key Laboratory of Advanced Numerical Control Technology NanjingJiangsu211167 China Jiangsu Provincial Engineering Laboratory of Intelligent Manufacturing Equipment Nanjing211167 China

Milling tools of the rail milling train have to face severe weariness due to the uneven surface hardness, inconsistent cutting rate and uncertain status of the rail itself as well as the vibration caused by the suspension system of the rail milling train and its characteristic hunting motion. This study performed a milling tool wearing status analysis and conducted relative research on wearing mechanisms with electron scanning microscope based on the typical milling tools and specific working conditions of rail milling train. Results indicate that the wearing status of rail milling train consists mainly of crater wear, notch wear, cutting edge chipping, surface exfoliation, milling sintering and tool break. The tool wearing conditions of rail milling train, compared with ordinary milling process, are significantly severe, and associated with multiple types of wearing status of which certain relevance exists. The research is of great significance for the improvement of the milling tool, the optimization of the process and the improvement of the mobile milling quality of the rail. © Springer Nature Singapore Pte Ltd. 2020.

关键词： Milling (machining)

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Layer-dependent electromechanical response in twisted graphene moiré superlattices

arXiv

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arXiv 2024年

作者： Zhang, Hanhao Wei, Yuanhao Li, Yuhao Lin, Shengsheng Wang, Jiarui Taniguchi, Takashi Watanabe, Kenji Li, Jiangyu Shi, Yi Wang, Xinran Shi, Yan Fei, Zaiyao National Laboratory of Solid-State Microstructures School of Electronic Science and Engineering Collaborative Innovation Center of Advanced Microstructures Nanjing University Jiangsu Nanjing210093 China State Key Laboratory of Mechanics and Control of Mechanical Structures Nanjing University of Aeronautics and Astronautics Jiangsu Nanjing210016 China National Key Laboratory of Spintronics Nanjing University Suzhou215163 China Research Center for Materials Nanoarchitectonics National Institute for Materials Science 1-1 Namiki Tsukuba305-0044 Japan Research Center for Electronic and Optical Materials National Institute for Materials Science 1-1 Namiki Tsukuba305-0044 Japan Guangdong Provisional Key Laboratory of Functional Oxide Materials and Devices Department of Materials Science and Engineering Southern University of Science and Technology Guangdong Shenzhen518055 China School of Integrated Circuits Nanjing University Jiangsu Suzhou215163 China Suzhou Laboratory Jiangsu Suzhou215123 China

The coupling of mechanical deformation and electrical stimuli at the nanoscale has been a subject of intense investigation in the realm of materials science. Recently, twisted van der Waals (vdW) materials have emerged as a platform for exploring exotic quantum states. These states are intimately tied to the formation of moiré superlattices, which can be visualized directly exploiting the electromechanical response. However, the origin of the response, even in twisted bilayer graphene (tBLG), remains unsettled. Here, employing lateral piezoresponse force microscopy (LPFM), we investigate the electromechanical responses of marginally twisted graphene moiré superlattices with different layer thicknesses. We observe distinct LPFM amplitudes and spatial profiles in tBLG and twisted monolayer-bilayer graphene (tMBG), exhibiting effective in-plane piezoelectric coefficients of 0.05 pm/V and 0.35 pm/V, respectively. Force tuning experiments further underscore a marked divergence in their responses. The contrasting behaviors suggest different electromechanical couplings in tBLG and tMBG. In tBLG, the response near the domain walls is attributed to the flexoelectric effect, while in tMBG, the behaviors can be comprehended within the context of piezoelectric effect. Our results not only provide insights into electromechanical and corporative effects in twisted vdW materials with different stacking symmetries, but may also offer a way to engineer them at the nanoscale. © 2024, CC BY.

关键词： Monolayers

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Emerging contaminants:A One Health perspective

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The Innovation 2024年第4期5卷 140-170,139页

作者： Fang Wang Leilei Xiang Kelvin Sze-Yin Leung Martin Elsner Ying Zhang Yuming Guo Bo Pan Hongwen Sun Taicheng An Guangguo Ying Bryan WBrooks Deyi Hou Damian EHelbling Jianqiang Sun Hao Qiu Timothy MVogel Wei Zhang Yanzheng Gao Myrna JSimpson Yi Luo Scott XChang Guanyong Su Bryan MWong Tzung-May Fu Dong Zhu Karl JJobst Chengjun Ge Frederic Coulon Jean Damascene Harindintwali Xiankui Zeng Haijun Wang Yuhao Fu Zhong Wei Rainer Lohmann Changer Chen Yang Song Concepcion Sanchez-Cid Yu Wang Ali El-Naggar Yiming Yao Yanran Huang Japhet Cheuk-Fung Law Chenggang Gu Huizhong Shen Yanpeng Gao Chao Qin Hao Li Tong Zhang Natàlia Corcoll Min Liu Daniel SAlessi Hui Li Kristian KBrandt Yolanda Pico Cheng Gu Jianhua Guo Jianqiang Su Philippe Corvini Mao Ye Teresa Rocha-Santos Huan He Yi Yang Meiping Tong Weina Zhang Fidèle Suanon Ferdi Brahushi Zhenyu Wang Syed AHashsham Marko Virta Qingbin Yuan Gaofei Jiang Louis A.Tremblay Qingwei Bu Jichun Wu Willie Peijnenburg Edward Topp Xinde Cao Xin Jiang Minghui Zheng Taolin Zhang Yongming Luo Lizhong Zhu Xiangdong Li DamiàBarceló Jianmin Chen Baoshan Xing Wulf Amelung Zongwei Cai Ravi Naidu Qirong Shen Janusz Pawliszyn Yong-guan Zhu Andreas Schaeffer Matthias C.Rillig Fengchang Wu Gang Yu James M.Tiedje State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China University of Chinese Academy of Sciences Beijing 100049China Department of Chemistry Hong Kong Baptist UniversityHong KongChina HKBU Institute of Research and Continuing Education Shenzhen Virtual University ParkShenzhenChina Technical University of Munich TUM School of Natural SciencesInstitute of Hydrochemistry85748 GarchingGermany School of Resources&Environment Northeast Agricultural UniversityHarbin 150030China Climate Air Quality Research UnitSchool of Public Health and Preventive MedicineMonash UniversityMelbourneVICAustralia Faculty of Environmental Science&Engineering Kunming University of Science&TechnologyKunming 650500China Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria College of Environmental Science and EngineeringNankai UniversityTianjin 300350China Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control School of Environmental Science and EngineeringInstitute of Environmental Health and Pollution ControlGuangdong University of TechnologyGuangzhou 510006China Ministry of Education Key Laboratory of Environmental Theoretical Chemistry South China Normal UniversityGuangzhouGuangdong 510006China Department of Environmental Science Baylor UniversityWacoTXUSA Center for Reservoir and Aquatic Systems Research(CRASR) Baylor UniversityWacoTXUSA School of Environment Tsinghua UniversityBeijing 100084China School of Civil and Environmental Engineering Cornell UniversityIthacaNY 14853USA Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province Zhejiang University of TechnologyHangzhou 310014China School of Environmental Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Laboratoire d’Ecologie Microbienne Universite Claude Bernard Lyon 1UMR CNRS 5557UMR INRAE 1418VetAgro Sup69622 VilleurbanneFrance Department of Pla

Environmental pollution is escalating due to rapid global development that often prioritizes human needs over planetary *** global efforts to mitigate legacy pollutants,the continuous introduction of new substances remains a major threat to both people and the *** response,global initiatives are focusing on risk assessment and regulation of emerging contaminants,as demonstrated by the ongoing efforts to establish the UN’s Intergovernmental Science-Policy Panel on Chemicals,Waste,and Pollution *** review identifies the sources and impacts of emerging contaminants on planetary health,emphasizing the importance of adopting a One Health *** for monitoring and addressing these pollutants are discussed,underscoring the need for robust and socially equitable environmental policies at both regional and international *** actions are needed to transition toward sustainable pollution management practices to safeguard our planet for future generations.

关键词： pollution planet contaminants

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Condition-Based Maintenance Strategy for Stochastic Degradation Systems Considering Spare Parts

Condition-Based Maintenance Strategy for Stochastic Degradat...

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2019 International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering, QR2MSE 2019

作者： Ren, Nai-Fei Wang, Yu Gan, Shu-Yuan Jiangsu University School of Mechanical Engineering Zhen Jiang Jiangsu212013 China Jiangsu Key Laboratory of Advanced Numerical Control Technology Nanjing211167 China School of Mechanical Engineering Jiangsu University Zhen Jiang Jiangsu212013 China

ISBN: (纸本)9781728114279

Effective spare parts inventory management can not only ensure timely maintenance of equipment maintenance activities, but also reduce inventory capital occupation and improve the economic benefits of enterprises. In this paper, we present a condition-based maintenance strategy that considers spare parts issues for systems, with the goal of jointly optimizing conditional-based maintenance and spare parts management. Random systems are gradually degraded and continuously monitored. Spare parts supply using (S-1,S) type inventory strategy. According to the proposed strategy, the replacement of components is based on the actual degree of degradation, which is caused by the demand for spare parts. The Monte Carlo simulation method was used to simulate the proposed condition-based maintenance and spare parts replacement strategy. Therefore, the optimal solution is obtained by jointly optimizing the spare parts and condition-based maintenance of the components. Finally, a numerical example is delivered to show the proposed method. © 2019 IEEE.

关键词： Condition based maintenance

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The Maintenance Strategy for Serial Machines Considering Intermediate Buffer and Different Spare Parts Replenishment Methods

The Maintenance Strategy for Serial Machines Considering Int...

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2019计算智能、工程与信息技术世界大会

作者： Shuyuan Gan Xinzhou Zhang Lan Chen Department of Mechanical Engineering Jiangsu University Jiangsu Key Laboratory of Advanced Numerical Control Technology

This paper is devoted to the maintenance strategy of two deteriorating machines,taking into account different spare parts replenishment methods,two spare parts inventories,and buffer level *** minimal system cost is achieved by determining the initiating conditions of *** on machine age and buffer level,the maintenance policy is given with 9 control parameters corresponding to related *** to large complexity involved,the optimization is performed by a method combining Monte Carlo simulation and Genetic Algorithm.A numerical example is given to illustrate the proposed *** results show that the minimal cost seems stable with different production rates of the upstream ***,among two groups of maintenance conditions,higher machine age corresponds to lower buffer *** study firstly considers buffer and different spare replenishment methods together during the maintenance of serial *** proposed method can be theory basis for combined maintenance decisions.

关键词： Carlo Monte The Maintenance Strategy for Serial Machines Considering Intermediate Buffer and Different Spare Parts Replenishment Methods Buffer

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Symmetry breaking and anomalous conductivity in a double moirésuperlattice

arXiv

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arXiv 2022年

作者： Li, Yuhao Xue, Minmin Fan, Hua Gao, Cun-Fa Shi, Yan Liu, Yang Watanabe, K. Taniguchi, T. Zhao, Yue Wu, Fengcheng Wang, Xinran Shi, Yi Guo, Wanlin Zhang, Zhuhua Fei, Zaiyao Li, Jiangyu National Laboratory of Solid-State Microstructures School of Electronic Science and Engineering Collaborative Innovation Center of Advanced Microstructures Nanjing University Jiangsu Nanjing210093 China Department of Materials Science and Engineering Southern University of Science and Technology Guangdong Shenzhen518055 China State Key Laboratory of Mechanics and Control of Mechanical Structures Nanjing University of Aeronautics and Astronautics Jiangsu Nanjing210016 China Key Laboratory for Intelligent Nano Materials and Devices of Ministry of Education Institute for Frontier Science Nanjing University of Aeronautics and Astronautics Nanjing210016 China Department of Physics Institute for Quantum Science and Engineering Southern University of Science and Technology Guangdong Shenzhen518055 China Jinan Institute of Quantum Technology Shandong Jinan250101 China Research Center for Functional Materials National Institute for Materials Science 1-1 Namiki Tsukuba305-0044 Japan International Center for Materials Nanoarchitectonics National Institute for Materials Science 1-1 Namiki Tsukuba305-0044 Japan School of Physics and Technology Wuhan University Wuhan430072 China Guangdong Provisional Key Laboratory of Functional Oxide Materials and Devices Southern University of Science and Technology Guangdong Shenzhen518055 China

A double moirésuperlattice can be realized by stacking three layers of atomically thin two-dimensional materials with designer interlayer twisting or lattice mismatches. In this novel structure, atomic reconstruction of constituent layers could introduce significant modifications to the lattice symmetry and electronic structure at small twist angles. Here, we employ conductive atomic force microscopy (cAFM) to investigate symmetry breaking and local electrical properties in twisted trilayer graphene. We observe clear double moirésuperlattices with two distinct moiré periods all over the sample. At neighboring domains of the large moiré, the current exhibit either two- or six-fold rotational symmetry, indicating delicate symmetry breaking beyond the rigid model. Moreover, an anomalous current appears at the ‘A-A’ stacking site of the larger moiré, contradictory to previous observations on twisted bilayer graphene. Both behaviors can be understood by atomic reconstruction, and we also show that the cAFM signal of twisted graphene samples is dominated by the tip-graphene contact resistance that maps the local work function of twisted graphene and the metallic tip qualitatively. Our results unveil cAFM is an effective probe for visualizing atomic reconstruction and symmetry breaking in novel moirésuperlattices, which could provide new insights for exploring and manipulating more exotic quantum states based on twisted van der Waals heterostructures. © 2022, CC BY.

关键词： Graphene

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Effectively Regulating Electrooxidation Pathway of Formic Acid Over Bimetallic PtCo Alloys Via the Integration of Theory and Experiment

SSRN

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SSRN 2024年

作者： Zheng, Zhikeng Liu, Bin Xu, Shaojun Wang, Yuchen Zhang, Man Chen, Yuwen Li, Ziang Wan, Yangyang Catlow, C.A. Richard Yan, Kai Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology School of Environmental Science and Engineering Sun Yat-sen University Guangzhou510275 China Department of Chemical Engineering University of Manchester ManchesterM13 9PL United Kingdom School of Chemistry Cardiff University Main Building Park Place CardiffCF10 3AT United Kingdom Rutherford Appleton Laboratory Research Complex at Harwell R92 Harwell OxfordshireOX11 0FA United Kingdom Institute for Advanced Materials School of Materials Science and Engineering Jiangsu University Zhenjiang212013 China Department of Chemistry University College London 20 Gordon Street LondonWC1H 0AJ United Kingdom

Challenges in directly regulating reaction pathways in small molecules electrooxidation have hindered widespread applications. Hence, we report directly tuning the pathway of formic acid oxidation (FAO) through the integration of theoretical and experimental approaches. DFT calculations indicate that the Pt1Co1 alloy with 50% Co incorporation is an ideal candidate for HCOO* formation with a significantly lower Gibbs free energy (−0.296 eV) compared to that of COOH* (0.028 eV), which reverses the trend on Pt. Guided by theoretical predictions, we fabricate bimetallic PtCo alloys using an eco-friendly microwave method. The Pt1Co1 alloy exhibits a 121-fold increased activity (1.18 A mgPt−1) compared to Pt. In situ infrared spectra confirm that PtCo alloys catalyze FAO through the direct pathway, suggesting a crucial role of Co in enhancing Pt's resistance to CO poisoning, perfectly aligning with the predicted changes. This work provides an essential reference for the rational development of high-efficiency Pt-based alloy electrocatalysts. © 2024, The Authors. All rights reserved.

关键词： Electrocatalysis

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Condition-Based Maintenance Strategy for Stochastic Degradation Systems Considering Spare Parts

Condition-Based Maintenance Strategy for Stochastic Degradat...

引用

International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering (ICQR2MSE)

作者： Nai-Fei Ren Yu Wang Shu-Yuan Gan 1. School of Mechanical Engineering Jiangsu University Zhen Jiang P.R. China Jiangsu Key Laboratory of Advanced Numerical Control Technology Nanjing PR China

ISBN: (数字)9781728114279

ISBN: (纸本)9781728114286

关键词： Degradation Safety Mathematical model Monte Carlo methods Inspection Preventive maintenance

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Design of multi-bus communication system for E-workshop

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AIP Conference Proceedings 2019年第1期2073卷

作者： Hao Zhu Xiaochun Zhu Ye Zhang 1Jiangsu Key Laboratory of Advanced Numerical Control Technology Nanjing Institute of Technology Nanjing 211167 China

In order to solve the defects of the low level of intelligence, poor scalability and low communication rate of the point-to-point protocol converter in the traditional E-workshop. Based on the existing CAN/RS485/Ethernet protocol, a workshop communication system based on STM32F4 control chip is designed. The communication interface of CAN/RS485/Ethernet and the software implementation of protocol conversion are given. The simulation and experimental results show that the data transmission rate of the communication system is significantly better than the traditional point-to-point protocol converter, and the data transmission is accurate and the bit error rate is low. Therefore, the communication system is more in line with the development needs of manufacturing communications.

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