检索结果-内蒙古大学图书馆

SSRN 2024年

作者： Yuan, Jingjing Xi, Wenyong Qiao, Yifan Zhou, Yan Ruan, Yuan Xu, Hui Li, Yifan He, Junjie He, Guangyu Chen, Haiqun Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology Advanced Catalysis and Green Manufacturing Collaborative Innovation Center Changzhou University Changzhou213164 China School of Energy and Power Engineering Jiangsu University Zhenjiang212013 China Changzhou Qiantai Medical Technology Co. Ltd. Changzhou213164 China

ZnMn2O4 spinel is considered a promising cathode material for zinc-ion batteries due to its superior Zn2+ storage capability. However, the widespread utilization of ZnMn2O4 spinel as a high-capacity cathode material is impeded by its insufficient electrical conductivity. To tackle this limitation, we have employed a sulfur doping approach by substituting sulfur for oxygen atoms within the ZnMn2O4 lattice structure. After theoretical calculation, the charge exchange between metal Zn/Mn and surrounding coordinated atoms is enhanced after sulfur doping. The sulfur-doped ZnMn2O4 spinel effectively enhances the electrical conductivity, improving its electrochemical discharge capacity. Furthermore, the results reveals that a doping level of 20% provided the greatest enhancement in capacitance, achieving a specific capacity of 220.1 mAh g-1. This work improves the disadvantages of ZnMn2O4 at the atomic level and can provide ideas for the optimization and modification of spinel cathode materials. © 2024, The Authors. All rights reserved.

关键词： Cathodes

来源：评论

学校读者我要写书评

暂无评论

Efficient Learning and Control of String- Type Artificial Muscle Driven Robotic Systems

Efficient Learning and Control of String- Type Artificial Mu...

引用

American Control Conference (ACC)

作者： Jiyue Tao Sunil Kumar Rajendran Yunsong Zhang Feitian Zhang Dexin Zhao Tongsheng Shen The Department of Advanced Manufacturing and Robotics College of Engineering Peking University Beijing China The National Innovation Institute of Defense Technology Beijing China The BSS Technologies Inc. Takoma Park MD USA The Department of Advanced Manufacturing and Robotics The State Key Laboratory of Turbulence and Complex Systems College of Engineering Peking University Beijing China

ISBN: (数字)9798350382655

ISBN: (纸本)9798350382662

This paper investigates the learning-based control of robotic systems driven by string-type artificial muscles. Due to the highly nonlinear dynamics of the actuators and the complicated mechanical structure, it is typically very challenging to design traditional model-based controllers that exhibit desired control performances. With the rapid development of machine learning techniques, deep reinforcement learning (DRL) algorithms have been utilized to control a variety of complex robotic systems. However, these DRL algorithms usually require a huge amount of training data and iterations to converge, which is generally unacceptable for the robotic systems of interest. Therefore, this paper designs an efficient learning-based control algorithm, aiming to improve the training efficiency for robotic systems driven by string-type artificial muscle actuators. Specially, two training improvements are proposed including imitation learning and data augmentation. This paper applies the proposed learning methods to three popular DRL algorithms and tests the control performances in three case studies using three string-type artificial muscle-driven robots, including a parallel robotic wrist, a two degrees-of-freedom (DOF) robotic eye and a robotic finger. Simulation results show that the proposed learning-based control methods significantly accelerate the convergence speed and improve the data efficiency in all the three case studies.

关键词： Artificial muscles Wrist Training Actuators Machine learning algorithms Imitation learning Fingers

来源：评论

学校读者我要写书评

暂无评论

Dinuclear gold-catalyzed C–H bond functionalization of cyclopropenes

引用

Science China Chemistry 2021年第11期64卷 1958-1963页

作者： Kai Liu Tingrui Li Duan-Yang Liu Weipeng Li Jian Han Chengjian Zhu Jin Xie State Key Laboratory of Coordination Chemistry Jiangsu Key Laboratory of Advanced Organic MaterialsChemistry and Biomedicine Innovation Center(ChemBIC)School of Chemistry and Chemical EngineeringNanjing UniversityNanjing210023China College of Chemical Engineering Zhejiang University of TechnologyHangzhou310014China College of Chemistry and Molecular Engineering Zhengzhou UniversityZhengzhou450001China Advanced Catalytic Engineering Research Center of the Ministry of Education Hunan UniversityChangsha410082China

We report an unprecedented C-H bond functionalization of cyclopropenes enabled by dinuclear gold *** selective C-H allylation,alkynylation and halogenation of cyclopropenes with organic halides have been *** reaction does not require strong external oxidants and affords access to functionalized cyclopropenes in moderate to good *** reductive elimination process to controllably construct C-C or C-X bonds can be tuned by using different dinuclear gold catalysts.

关键词： cyclopropenes gold catalysis allylation alkynylation C–H activation

来源：评论

学校读者我要写书评

暂无评论

A Gender Recognition Method for Chinese Mitten Crab in Low Light Environment Based on Machine Vision

A Gender Recognition Method for Chinese Mitten Crab in Low L...

引用

2024 China Automation Congress, CAC 2024

作者： Tian, Junlong Guo, Ya Liu, Yingfei Zhang, Jianguo Jiang, Yongnian International Joint Research Center for Intelligent Optical Sensing and Applications Jiangnan University Wuxi China Key Laboratory of Advanced Process Control for Light Industry Ministry of Education Jiangnan University Wuxi China Aquatic and Livestock Station of Yixing Agriculture and Rural Bureau Yixing China Wuxi Agricultural Equipment Technology Extension Center Wuxi China Jiangsu Zhongnong IoT Technology Co. LTD Yixing China

ISBN: (纸本)9798350368604

The acquisition of gender information of Chinese mitten crabs is crucial for survival rate assessment and biomass estimation. Machine vision is commonly used for the automatic gender recognition of Chinese mitten crabs, but the low light conditions caused by deeper containers reduce the accuracy of existing algorithms. To improve the accuracy of gender recognition of Chinese mitten crabs in low light environments, this study incorporates the GAM into the backbone of YOLOv7, improving the capability to distinguish gender-specific features. A lightweight upsampling operator, CARAFE, replaces the original upsampling module, expanding the model’s receptive field and better aggregating global information. Using Focal-CIoU to mitigate the impact of low-quality prediction boxes, enabling the model to better optimize high-quality ones. By constructing an image dataset of Chinese mitten crabs in low-light environments to validate the model’s performance, experimental results demonstrate that the average precision of the model established in this study is 0.870, 10.6% higher than the most update algorithm GMNet-YOLOv4, effectively performing the classification task of Chinese mitten crabs in low-light environments. © 2024 IEEE.

关键词： Machine vision

来源：评论

学校读者我要写书评

暂无评论

Room temperature Er:Y2O3 ceramic laser at ~1.6 µm

Room temperature Er:Y2O3 ceramic laser at ~1.6 µm

引用

advanced Solid State Lasers, ASSL 2021 - Part of Laser Congress, LAC 2021

作者： Xie, Hangbin Zhang, Jianing Wang, Fei Wang, Jun Tang, Dingyuan Shen, Deyuan Jiangsu Key Laboratory of Advanced Laser Materials and Devices School of Physics and Electronic Engineering Jiangsu Normal University Xuzhou221116 China Jiangsu Collaborative Innovation Center of Advanced Laser Technology and Emerging Industry Jiangsu Normal University Xuzhou221116 China

ISBN: (纸本)9781557528209

关键词： Solid state lasers

来源：评论

学校读者我要写书评

暂无评论

Investigation of vascular morphology prediction based on high dimensional pulse acquisition system and finite element methods

Investigation of vascular morphology prediction based on hig...

引用

Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)

作者： Yue He Quan Wang Fang Wang Heng Yang Ke Sun Yi Sun Xinxin Li Xikun Zheng Jingqing Hu Zhenjiang Key Laboratory of Advanced Sensing Materials and Devices Jiangsu University Zhenjiang China State Key Laboratory of Transducer Technology Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai China Xin-Huangpu Joint Innovation Institute of Chinese Medicine Guangzhou China

ISBN: (数字)9798350371499

ISBN: (纸本)9798350371505

In this paper, we propose a novel pulse acquisition system based on MEMS technology, where finger-end pressure and micro-sensor array applications are combined to achieve a high degree of integration of multi-channel information at the pulse acquisition end. A static stress analysis model for blood vessels based on the finite element method is proposed, which is used to investigate the effects of the modulus of elasticity of the vessel wall, and the inner diameter of the vessel on the outward pressure. The blood flow patterns of people with different blood pressures were simulated by varying the pressure intensity of the vessel wall. And the accuracy of the model was verified by collecting pulse waves of hypertensive patients by the designed pulse information acquisition system. This study is expected to enable non-invasive and low medical cost preliminary vascular lesion diagnosis through the detection of pulse.

关键词： Analytical models Solid modeling Pulse measurements Morphology Predictive models Software Finite element analysis Sensors Lesions Stress

来源：评论

学校读者我要写书评

暂无评论

An aqueous organic flow battery integrating a high-capacity hexaazatrinaphthylene anode with a phenazine anolyte for hybrid energy storage

引用

Journal of Energy Storage 2025年 128卷

作者： Yuan, Zhiwei Zheng, Kai Xu, Juan Shen, Yong-Miao Zang, Jian Cao, Jianyu Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology Changzhou University Changzhou213164 China School of Chemistry and Chemical Engineering Zhejiang Sci-Tech University Hangzhou310018 China School of Textile Garment and Design Changshu Institute of Technology Changshu215500 China

Aqueous organic redox flow batteries (AORFBs) are promising in large-scale energy storage applications due to their environmental friendliness, decoupled energy and power, high efficiency, long lifespan, and safety. However, achieving both high accessible specific capacity and reliable cycling performance simultaneously remains challenging, primarily because concentrated organic electrolytes typically suffer from reduced diffusion coefficients, diminished interfacial redox kinetics, and increased undesirable side reactions. In this study, to circumvent these limitations, we propose a novel AORFB design combining a high-capacity hexaazatrinaphthylene (HATN) anode with a phenazine anolyte, which is further paired with a highly stable Li4[Fe(CN)6] catholyte for hybrid energy storage. This innovative AORFB cell demonstrates high energy efficiency, remarkable capacity utilization and outstanding cycling stability, attributed to the fast redox kinetics and excellent stability of both HATN and BHPC, a synergistic effect between the two, and the high mass-loading of HATN at the anode. Furthermore, a prototype three-cell AORFB stack incorporating high-loading HATN anodes is successfully constructed, achieving a power density exceeding 400 mW cm−2, a high capacity utilization of 82.3 %, and excellent cycling durability with a capacity retention of 99.953 % per cycle, showcasing its potential for large-scale energy storage. © 2025 Elsevier Ltd

关键词： Hybrid power

来源：评论

学校读者我要写书评

暂无评论

Effects of Polycarboxylate-based Grinding Aid on the Performance of Grinded Cement

引用

Journal of Wuhan University of technology(Materials Science) 2021年第5期36卷 682-688页

作者： HE Yan ZHANG Xiong WU Genhuo SHI Pengcheng School of Civil Engineering Suzhou University of Science and TechnologySuzhou 215011China Key Laboratory of Advanced Civil Engineering Materials of Education Ministry Tongji UniversityShanghai 201804China Jiangsu Technology Industrialization and Research Center of Ecological Road Engineering Suzhou 215011China

A molecular modified PCE-type GA was self-synthesized,and the grindability concerning grinding duration and particle size distribution of ground cement was *** time,flowability,hydration heat,mechanical properties and microstructure of the ground cement were also *** results show that:PCE-type GA is effective in cement *** 0.03%PCE-type GA added into cement clinker,the Blain surface area reaches to the highest at every ten minutes,and the volume percent of cement particles with size of(0-32μm)reaches the *** amount of PCE-type GA seems to impair the grinding *** grinding efficiency promotes cement fineness and hence contributes to the cement hydration degree as well as improves the mechanical properties.

关键词： PCE-type GA cement grindability fineness hydration properties

来源：评论

学校读者我要写书评

暂无评论

Eu Doped Zn-Mofs Nanofiber Fluorescent Membrane and its Multifunctional Detection of Nitrobenzene, 4-Nitrophenol, Benzaldehyde and Fe 3+

SSRN

引用

SSRN 2023年

作者： Chen, Mengyun Shao, Rong Wang, Qiongqiong Gao, Yan Ma, Ye Guan, Rongfeng Yang, Tao Yancheng Institute of Technology China Henan Polytechnic University China Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province Yancheng Institute of Technology Jiangsu Province Yancheng China Students' affairs Division Yancheng Institute of Technology China

Metal-organic frameworks (MOFs) fluorescent materials have significant advantages in detecting organic pollutants and metal ion pollution. Zinc metal organic framework nanofiber fluorescent membrane(Zn(Eu)-MOFs@PAN NFMs) is prepared of doping lanthanide metal Eu by electrospinning and impregnation process. The structure and morphology of the membrane is characterized by SEM, XRD, FT-IR and XPS. The results show that the membrane has good fluorescence performance, and can successfully and efficiently detect nitrobenzene (NB, detection limit, 0.861 ppm;Ksv= 0.143 ppm-1), 4-nitrophenol (4-NP, detection limit, 0.631 ppm;Ksv= 0.178 ppm-1), benzaldehyde (BA, detection limit, 0.981 ppm;Ksv= 0.051 ppm-1) and Fe3+ (detection limit, 3.418 ppm;Ksv= 3.210×10-3 ppm-1) in solution. In terms of repeatability and stability, the test results are obviously better than the powder test results. © 2023, The Authors. All rights reserved.

关键词： Electrospinning

来源：评论

学校读者我要写书评

暂无评论

MrDMD-Based Sensor Placement in Distributed Flow Estimation for the Design of the Artificial Lateral Line of an Underwater Robot

MrDMD-Based Sensor Placement in Distributed Flow Estimation ...

引用

IEEE Conference on Decision and Control

作者： Jun Wang Tongsheng Shen Dexin Zhao Feitian Zhang Department of Advanced Manufacturing and Robotics College of Engineering Peking University Beijing China National Innovation Institute of Defense Technology Beijing China Department of Advanced Manufacturing and Robotics State Key Laboratory of Turbulence and Complex Systems College of Engineering Peking University Beijing China

An artificial lateral line (ALL) is a sensing system that imitates the distributed perception organs of fish and plays a major role in enhancing the flow estimation capability of underwater robots. Whereas various ALLs have been designed and developed, it is still an open question how to better place ALL sensors on underwater robots, especially for those with complex shapes and working in dynamic flow and robot operating conditions. Aiming to answer this question, this paper presents a novel data-driven sensor placement method for ALLs of underwater robots. This method adopts distributed pressure sensors to measure the flow field along the profile or the outermost boundary of an underwater robot, and quantifies the dynamic information embedded within these measurements using multi-resolution dynamic mode decomposition (mrDMD). The sensors are then positioned by optimizing the dynamic flow information to enhance the perception. Compared with existing sensor placement methods, such as observability maximization and exhaustive experimental search, the proposed method focuses on the modes of dynamics variability at various spatio-temporal scales, thus leading to improved sensing ability especially in complex and dynamic flows. In addition, comprehensively considering the sensor placement under different flow and robot operating conditions, the proposed method is expected to provide an optimal solution for the overall sensing performance of the ALL system. To demonstrate the effectiveness of the proposed method, a case study of background flow speed estimation of oscillating underwater robots of different shapes in a uniform flow is presented.

关键词：

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：