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SSRN 2024年

作者： Niu, Ruihao Xin, Qipu Lao, Jihui Huang, Xiao Chen, Qihe Yin, Jun Chen, Jun Liu, Donghong Xu, Enbo College of Biosystems Engineering and Food Science National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment Zhejiang Key Laboratory for Agro-Food Processing Integrated Research Base of Southern Fruit and Vegetable Preservation Technology Fuli Institute of Food Science Zhejiang University Hangzhou310058 China College of Life Sciences Zhejiang University Hangzhou310058 China Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province School of Mechanical Engineering Zhejiang University Hangzhou310028 China Innovation Center of Yangtze River Delta Zhejiang University Jiaxing314102 China State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang University Hangzhou310058 China MOE Key Laboratory of Biosystems Homeostasis & Protection Zhejiang University Hangzhou China Cancer Center Zhejiang University Hangzhou China

Upon the pressure of conventional land agriculture and marine environment facing the future of human beings, the emerging of alternative proteins represented by cultured meat is expected with a breakthrough of efficient, safe and sustainable production. However, the cell proliferation efficiency and final myofiber density in current animal-derived scaffolds are still limited. Here, we incorporated five plant-derived edible polymeric glucosyl nanoparticles (GNPs) into gelatin alginate hydrogels to form nanoaggregates with nanotopographies inside. The nano-scale topological morphology significantly enhances the adhesion and proliferation efficiencies of piscine satellite cells (PSCs) in the scaffold. Mechanically, the presence of GNP nanoaggregate increases the interaction between ITG-A1 (membrane protein of PSCs) and hydrogel microenvironment, which activates the focal adhesion-integrin-cytoskeleton mechanotransduction signaling to promote cell proliferation. With a controlled diameter, these GNPs can also improve the density, alignment and differentiation efficiency of PSCs. When cultured in vitro for 15 days, the diameter, cell density and orientation of muscle fibers in the GNP-stimulated cultured fish fillet are very similar to native fish muscle tissue. © 2024, The Authors. All rights reserved.

关键词： Nanoparticles

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Size-induced axial segregation of binary mixtures in rotating drum of different lengths

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Chemical engineering Science 2025年 316卷

作者： He, Jielong Wang, Yuelei Yang, Liuyimei Xu, Jin Zheng, Qijun Liu, Sida Zhou, Zongyan Jiangxi Provincial Key Laboratory of Particle Technology Jiangxi University of Science and Technology Nanchang330013 China Research Centre for Intelligent Mineral Processing & Metallurgy International Institute for Innovation Jiangxi University of Science and Technology Nanchang330013 China Ganjiang Innovation Academy Chinese Academy of Sciences Ganzhou341000 China Centre for Simulation and Modelling of Particulate Systems Monash-Southeast University Joint Research Institute Suzhou215123 China ARC Research Hub for Smart Process Design and Control Department of Chemical and Biological Engineering Monash University MelbourneVIC3800 Australia

This study investigates the size-induced axial segregation of binary mixtures in rotating drums, particularly focusing on the effect of drum length. The results indicate that long drums require more time to achieve stable segregation and form more segregation bands. The core region under the free bed surface remains predominantly filled with small particles, indicating that radial segregation occurs simultaneously with the axial segregation. The angle of repose of large particle bands is consistently greater than that of small particle bands, which drives the migration of large particles. Short drums are more sensitive to changes in rotational speed, while long drums with moderate rotational speed promote the formation of segregation bands. The width of small particle bands shows an increasing–decreasing-stabilizing trend with the drum length increasing. An analysis of particle velocities reveals that the characteristics of segregation bands are closely related to the relative velocity difference between large and small particles. © 2025 Elsevier Ltd

关键词： Binary mixtures

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Fast Construction Algorithm of Cooperative Relay Network for Unmanned Aerial Vehicle

Fast Construction Algorithm of Cooperative Relay Network for...

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第33届中国控制与决策会议

作者： Guoqiang Wang Pengfei Cheng He Luo School of Management Hefei University of Technology Key Laboratory of Process Optimization and Intelligent Decision-Making Ministry of Education Engineering Research Center for Intelligent Decision-making & Information Systems Technologies Ministry of Education Key Laboratory of Urban ITS Technology Optimization and Integration Ministry of Public Security of China

In view of the situation that the relay network needs to be constructed between the combat nodes with communication interruption in battlefield environment,a fast construction algorithm of Unmanned Aerial Vehicle(UAV) cooperative relay network is proposed,which is based on the theory of multiple shortest paths and strategy of giving priority to the relay placement node that is the most difficult to reach for *** with the existing algorithms,this algorithm can further shorten the construction time of UAV cooperative relay network on the premise of minimizing the number of UAVs used for ***,the simulation experiment results demonstrate the effectiveness of the proposed algorithm.

关键词： UAV Relay network Node Placement Multiple shortest paths

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Topological Polymeric Glucosyl Nanoaggregates in Scaffold Enable High-Density Piscine Muscle Tissue

SSRN

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SSRN 2024年

作者： Niu, Ruihao Su, Jia Lao, Jihui Yin, Jun Liu, Donghong Chen, Qihe Huang, Xiao Xu, Enbo Xin, Qipu Chen, Jun College of Biosystems Engineering and Food Science National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment Zhejiang Key Laboratory for Agro-Food Processing Integrated Research Base of Southern Fruit and Vegetable Preservation Technology Fuli Institute of Food Science Zhejiang University Hangzhou310058 China College of Life Sciences Zhejiang University Hangzhou310058 China Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province School of Mechanical Engineering Zhejiang University Hangzhou310028 China Innovation Center of Yangtze River Delta Zhejiang University Jiaxing314102 China State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang University Hangzhou310058 China MOE Key Laboratory of Biosystems Homeostasis & Protection Zhejiang University Hangzhou China Cancer Center Zhejiang University Hangzhou China Shanxi Normal University China

关键词： Nanoparticles

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Enhancing Force Sensing Capabilities in Exoskeleton Interfaces Using Compliant Actuator-Sensor Units - A User Study

Enhancing Force Sensing Capabilities in Exoskeleton Interfac...

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IEEE/RAS-EMBS International Conference on Biomedical Robotics and Biomechatronics (BioRob)

作者： Hosam Alagi Nikola Fischer Kai Behrends Iris Ftirst-Walter Jürgen Becker Michael Beigl Franziska Mathis-Ullrich Björn Hein Intelligent Process Automation and Robotics Laboratory (IPR) Institute for Anthropomatics and Robotics (IAR) Karlsruhe Institute of Technology (KIT) Karlsruhe Germany Institute of Telematics (TM) - Pervasive Computing Systems (TECO) at Karlsruhe Institute of Technology (KIT) Karlsruhe Germany Institut fuer Technik der Informationsverarbeitung (ITIV) at Karlsruhe Institute of Technology (KIT) Karlsruhe Germany Department Artificial Intelligence in Biomedical Engineering (AIBE) Friedrich-Alexander University Erlangen-Nürnberg (FAU) Erlangen Germany Karlsruhe University of Applied Sciences Karlsruhe Germany

ISBN: (数字)9798350386523

ISBN: (纸本)9798350386530

Reliable interaction force sensing between an exoskeleton and the human body is crucial for personalized support and efficient control. Poor donning and disturbances during movement lead to lower force measurement quality and thus to unfavorable use. In this work, we present an active smart human-robot interface by utilizing compliant actuator-sensor units (CASUs) that can be worn over clothing. These units combine capacitive force sensing and actuation using Shape-Memory Alloy (SMA) to actively compensate disturbances and improve force measurement by tightening the interface and reestablishing optimal contact. We present a pilot user study with five subjects, investigating the performance of an exoskele-ton interface featuring three integrated CASUs to compensate for non-ideal donning configurations and displacements during daily activities of walking, sitting down, and climbing the stairs. The results for a passive interface show a decrease in holding forces and force signal quality during activities. Our active interface, on the other hand, effectively compensates for disturbances, restoring high signal quality by the mean of peak-to-peak value up to 300% which leads to more distinct signals.

关键词： Legged locomotion Force measurement Cooling Force Exoskeletons Metals Stairs Robot sensing systems Sensors Reliability

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Visualization, Modeling and Analysis of Salmon Muscle Structure: Based on Micro-Ct

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SSRN 2022年

作者： Zhu, Yiyuan Xu, Enbo Yin, Jun Xu, Weidong Liu, Donghong College of Biosystems Engineering and Food Science National Engineering Laboratory of Intelligent Food Technology and Equipment Innovation Center of YangtzeRiverDelta Zhejiang Key Laboratory for Agro-Food Processing Fuli Institute of Food Science Zhejiang University Hangzhou310058 China The State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang University Hangzhou310028 China School of Mechanical Engineering Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province School of Mechanical Engineering Zhejiang University Hangzhou310028 China Ningbo Research Institute Zhejiang University Ningbo315100 China

Seafood analogs using culture cell or plant-based materials are rising for future food supply, but the bionic design of them is still an issue of finely simulating the multiscale structure and function of fishes. For salmon, we compared the back, belly and tail tissues via microcomputed tomography (micro-CT) scanning with optimized tissue contrast and spatial resolution. The optimum staining conditions of salmon muscle tissue for micro-CT was 3.75% IKI (iodine-potassium iodide) solution for 7 days, and the muscle could be separated well from fat and connective tissue. The results of visualization analysis were correlated with the texture profile analysis. A relatively high magnification (3 µm/pixel) was used with fiber tracing procedure to analyze the connection of muscle fiber bundles surrounded by soft tissue. Single muscle fiber (e.g., diameter 39 µm) was successfully and artificially separated from whole visualized tissue through manual division. Overall, this study proved a novel ultra-high-resolution method based on micro-CT to conduct digital analysis of muscle fascicle architecture, and constructed printable model of bionic animal/plant tissue for food design. © 2022, The Authors. All rights reserved.

关键词： Textures

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Toward optimal designs of domestic air-to-water heat pumps for a net-zero carbon energy system in the UK

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Cell Reports Sustainability 2024年第2期1卷

作者： Olympios, Andreas V. Hoseinpoori, Pooya Markides, Christos N. Clean Energy Processes (CEP) Laboratory Department of Chemical Engineering Imperial College London London SW7 2AZ United Kingdom Sargent Centre for Process Systems Engineering Imperial College London London SW7 2AZ United Kingdom PHAETHON Centre of Excellence for Intelligent Efficient and Sustainable Energy Solutions University of Cyprus Nicosia 2109 Cyprus Centre for Environmental Policy Imperial College London London SW7 2AZ United Kingdom

Air-to-water heat pumps come with diverse design options whose cost and performance are correlated, giving rise to a crucial question: should manufacturers aim at designing higher-performance yet higher-cost heat pumps, reducing the wider energy infrastructure cost but increasing the upfront cost to end users, or more affordable yet lower-performance alternatives? Comprehensive heat pump performance and cost models are integrated within a whole UK energy system framework to capture how different heat pump designs influence the decarbonization pathway. We find that an uptake of higher-performance heat pumps leads to a reduced national electricity generation capacity. However, there is an optimal design that minimizes the total system transition cost, indicating a point of diminishing returns, beyond which, instead of investing in even higher heat pump performance, it is more cost effective to invest in centralized energy generation and storage. Insights are valuable for locations with low heat pump adoption and high electricity-to-gas price ratios. © 2024 The Author(s)

关键词： decarbonization distributed energy domestic heating electrification energy conversion energy system energy transition heat pump optimization

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A simple compression sealing method for planar single-cell SOFC testing

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Fuel 2025年 402卷

作者： Celina Fernandes Luís Alves Laura Holz Duncan Fagg Adélio Mendes LEPABE - Laboratory for Process Engineering Environmental Biotechnology and Energy Faculty of Engineering University of Porto Rua Dr. Roberto Frias 4200-465 Porto Portugal ALiCE - Associate Laboratory in Chemical Engineering Faculty of Engineering University of Porto Rua Dr. Roberto Frias 4200-465 Porto Portugal Center for Mechanical Technology and Automation Mechanical Engineering Department University of Aveiro Aveiro 3810-193 Portugal LASI - Intelligent Systems Associate Laboratory Portugal

A lab high-temperature planar solid oxide fuel cell was designed and built for developing and testing new sealing strategies. The lab cell was developed to allow easy and fast sealing and to be low cost; it was made from AISI316 stainless steel and sealed with vermiculite sheets (Thermiculite). It was applied a low compressive loading (0.2 N m) to avoid the failure of the ceramic membrane (Thermiculite). The ex-situ and in-situ experiments revealed remarkable results; the leakage rate was very low, 0.44 mL min −1 m −1 . The electrochemical tests revealed a high stable open circuit potential of ca . 1.04 V @ 650 °C when hydrogen and oxygen were fed to the cell, indicating minimal crossover between the cathode and anode. The reliability of the cell design was assessed by performing several heating cycles. During the cooling and heating stages, the circuit was open while when running at the nominal temperature, 650 °C, a potential difference of 0.7 V was imposed for a total of 109 h. The open circuit potential remained stable during the whole experiment.

关键词： Sealing Leakage Gas sealant Thermiculite Planar SOFC

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Constructing Multilevel Structure with Microdomains of Oxides on Three-Dimensional High-Entropy Alloy Support Toward Efficient Oxygen Evolution

SSRN

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SSRN 2022年

作者： Zhang, Shaofei Guo, Jing Li, Tiantian Sun, Jinfeng Meng, Yongqiang Kang, Jianli Tan, Linli Zhang, Zhijia Hebei Key Laboratory of Flexible Functional Materials Hebei Key Laboratory of Material Near-Net Forming Technology School of Materials Science and Engineering Hebei University of Science and Technology Shijiazhuang050018 China Key laboratory of Advanced Ceramics and Machining Technology Ministry of Education School of Materials Science and Engineering Tianjin University Tianjin300072 China Key Laboratory of Green Manufacturing of Super-light Elastomer Materials of State Ethnic Affairs Commission College of Intelligent systems Science and Technology Hubei Minzu University Enshi445000 China State Key Laboratory of Separation Membrane and Membrane Process Tianjin Municipal Key Laboratory of Advanced Fibers and Energy Storage School of Materials Science and Engineering Tiangong University Tianjin300387 China

High-entropy alloys (HEAs) with maximized configurational entropy has shown a great promise for anodic water splitting, but still limited to their unsatisfactory configuration and large-scaled application. In the present study, a series of dual-phase electrodes with spinel MnCr2O4 microdomains pinning on large-scaled and flexible surface oxidized high-entropy alloys (O-HEA) as highly efficient electrocatalysts is prepared by combining modified non-solvent induced phase separation (NIPs) and metallurgy approaches. The precipitation of MnCr2O4 microdomains from O-HEA support not only result in a shrinking of lattice constant of HEA but also lead to a surface reconstruction. Besides, the MnCr2O4 microdomains can synergy with reconstructed O-HEA support to increase the hydrophilic property and provide high-efficient electron/ion transport, thus promoting the O-O coupling. By virtues of the multilevel structure, the O-HEA2 electrode exhibits impressive oxygen evolution properties with a low overpotential of 268 mV and Tafel slope of 51.6 mV dec−1 in 1M KOH at 10 mA cm−2. It also exhibits a long durability exceed 70 h at 25 mA cm−2. This work provides a new prospect for the rational design of large-scaled and self-supported 3D HEA based electrodes for energy conversion applications. © 2022, The Authors. All rights reserved.

关键词： Catalyst activity

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Communication-Efficient Distributed Online Nonconvex Optimization with Time-Varying Constraints

arXiv

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arXiv 2025年

作者： Zhang, Kunpeng Xu, Lei Yi, Xinlei Wen, Guanghui Cao, Ming Johansson, Karl H. Chai, Tianyou Yang, Tao State Key Laboratory of Synthetical Automation for Process Industries Northeastern University Shenyang110819 China Department of Mechanical Engineering University of Victoria VictoriaBCV8W 2Y2 Canada Shanghai Institute of Intelligent Science and Technology National Key Laboratory of Autonomous Intelligent Unmanned Systems Frontiers Science Center for Intelligent Autonomous Systems Ministry of Education Shanghai201210 China School of Automation Southeast University Nanjing210096 China Engineering and Technology Institute Groningen Faculty of Science and Engineering University of Groningen GroningenAG 9747 Netherlands Division of Decision and Control Systems School of Electrical Engineering and Computer Science KTH Royal Institute of Technology Stockholm10044 Sweden

This paper considers distributed online nonconvex optimization with time-varying inequality constraints over a network of agents, where the nonconvex local loss and convex local constraint functions can vary arbitrarily across iterations, and the information of them is privately revealed to each agent at each iteration. For a uniformly jointly strongly connected time-varying directed graph, we propose two distributed bandit online primal–dual algorithm with compressed communication to efficiently utilize communication resources in the one-point and two-point bandit feedback settings, respectively. In nonconvex optimization, finding a globally optimal decision is often NP-hard. As a result, the standard regret metric used in online convex optimization becomes inapplicable. To measure the performance of the proposed algorithms, we use a network regret metric grounded in the first-order optimality condition associated with the variational inequality. We show that the compressed algorithm with one-point bandit feedback establishes an O(Tθ1) network regret bound and an O(T7/4−θ1) network cumulative constraint violation bound, where T is the number of iterations and θ1 ∈ (3/4,5/6] is a user-defined trade-off parameter. When Slater’s condition holds (i.e, there is a point that strictly satisfies the inequality constraints at all iterations), the network cumulative constraint violation bound is reduced to O(T5/2−2θ1). In addition, we show that the compressed algorithm with two-point bandit feedback establishes an O(Tmax{1−θ1,θ1}) network regret and an O(T1−θ1/2) network cumulative constraint violation bounds, where θ1 ∈ (0,1). Moreover, the network cumulative constraint violation bound is reduced to O(T1−θ1) under Slater’s condition. The bounds are comparable to the state-of-the-art results established by existing distributed online algorithms with perfect communication for distributed online convex optimization with inequality constraints. To the best of our knowledge, thi

关键词： Convex optimization

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