检索结果-南通市图书馆

Science China Chemistry 2025年第1期 192-200页

作者： dongying Wang Shulan Pu Yongmin Chen Ke Lei Yujie Duan Linjiao Mao Xuhui Zeng Xi Luo Yuntao Zhang yuqin dong Jin Zhong Zhang Yan Sun School of Mechanical Engineering Chengdu University Department of Chemistry and Biochemistry University of California

Potassium ions （K+） doped graphitic carbon nitride （g-C3N4） was prepared by a thermal etching method using potassium hydroxide （KOH） as an ion *** transform infrared spectroscopy （FTIR） and X-ray photoelectron spectroscopy （XPS）results showed that the generation of the cyano group was detected while introducing K+.Under simulated sunlight irradiation,the sample with a K+doping amount of 10%showed the highest hydrogen peroxide （H2O2） generation rate of2,140.2μmol *** apparent quantum yield （AQY） at 400 nm and the solar-to-chemical conversion （SCC） are 4.35%and1.23%,respectively.K+acted as a bridge between g-C3N4layers,which enhanced charge transfer ***,the cyano group enhanced the adsorption capacity of protons （H+） and promoted the yield of *** catalyst exhibited excellent photocatalytic stability based on four-cycle *** addition,a mechanism study showed that superoxide radicals （·O2-）were the most important active species in the reaction *** production of H2O2was achieved through consecutive single-electron *** study deepens the understanding of the oxygen reduction reaction process and opens up a new venue for improving H2O2generation.

关键词：

同方期刊数据库

Multi-Robot Formation Control And Implementation

在线全文

学校读者我要写书评

暂无评论

Multi-Robot Formation Control And Implementation

新时代应用型地方本科高校教师考核评价和绩效工资改革联动体系构建研究

第40届中国控制会议

作者： Hao Chen Jie Qi yuqin dong Sanguan Zhong College of Information Science and Technology Donghua University Engineering Research Center of Digitized Textile and Fashion Technology Ministry of EducationDonghua University

This paper develops a distributed method for formation control of ground mobile robots via partial differential equations（PDEs）-based approach. The collective dynamics of a group of mobile robots is modeled by a reaction-advection-diffusion PDE. Based the model, we design a boundary control by using of the PDE backstepping method,which results in the leader-actuating formation control scheme with the leader robots locate on the boundary. In the control scheme, each follower robot only needs to obtain its own position and the relative position to its neighbors, which reduce the cost of the followers. We verify the effectiveness of the control scheme through the mobile robots experiment. In the experiment, we use Link Track UWB module to realize the positioning function adding the Kalman filter algorithm to improve the positioning accuracy and we use MPC to realize the movement control of the car’s forward speed, lateral speed and angle.

关键词： Multi-robot system Boundary control Backstepping Model Predictive Control

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

浙江医学教育 2023年第3期22卷 136-140,145页

作者：董雨琴杭州医学院人事处杭州310053

大多数高校突出以定量指标作为绩效分配的依据,而对教书育人业绩、科研创新业绩、社会服务贡献度等定性指标的绩效体现不足。本文以杭州医学院为例,在科学设置教师分类绩效考核评价体系的基础上,构建了适应应用型地方本科高校发展的岗... 详细信息

大多数高校突出以定量指标作为绩效分配的依据,而对教书育人业绩、科研创新业绩、社会服务贡献度等定性指标的绩效体现不足。本文以杭州医学院为例,在科学设置教师分类绩效考核评价体系的基础上,构建了适应应用型地方本科高校发展的岗位绩效工资分配体系,通过对2个体系的协同改革,体现了“岗位管理、以岗定薪、多劳多得、优绩优酬”的原则,努力激发教师对教育教学工作的热情,助力推进新时代教育评价改革向纵深发展。

关键词：教师考核评价地方本科高校绩效工资分配体系

Low-temperature chlorination roasting technology for the simultaneous recovery of valuable metals from spent LiCoO_(2)cathode material

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 80-91页

作者： Junjie Shi Changle Hou Jingjing dong dong Chen Jianzhong Li Key Laboratory for Ecological Metallurgy of Multimetallic Mineral(Ministry of Education) Northeastern UniversityShenyang 110819China School of Metallurgy Northeastern UniversityShenyang 110819China

With the continuous increase in the disposal volume of spent lithium-ion batteries(LIBs),properly recycling spent LIBs has become essential for the advancement of the circular *** study presents a systematic analysis of the chlorination roasting kinetics and proposes a new two-step chlorination roasting process that integrates thermodynamics for the recycling of LIB cathode *** activation energy for the chloride reaction was 88.41 kJ/mol according to thermogravimetric analysis–derivative thermogravimetry data obtained by using model-free,model-fitting,and Z(α)function(αis conversion rate).Results indicated that the reaction was dominated by the first-order(F1)model when the conversion rate was less than or equal to 0.5 and shifted to the second-order(F2)model when the conversion rate exceeded *** conditions were determined by thoroughly investigating the effects of roasting temperature,roasting time,and the mass ratio of NH_(4)Cl to LiCoO_(2).Under the optimal conditions,namely 400℃,20 min,and NH_(4)Cl/LiCoO_(2)mass ratio of 3:1,the leaching efficiency of Li and Co reached 99.43% and 99.05%,*** of the roasted products revealed that valuable metals in LiCoO_(2)transformed into CoCl_(2) and ***,the reaction mechanism was elucidated,providing insights for the establishment of a novel low-temperature chlorination roasting technology based on a crystal structure *** technology can guide the development of LIB recycling processes with low energy consumption,low secondary pollution,high recovery efficiency,and high added value.

关键词： spent lithium-ion battery thermodynamics chlorination roasting kinetics circular economy

Enhanced solid-electrolyte interface efficiency for practically viable hydrogen-air fuel cell systems

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2025年第1期100卷 356-368页

作者： Venkitesan Sakthivel dong Jin Yoo Graduate School Department of Energy Storage/Conversion Engineering (BK21 FOUR) Hydrogen and Fuel Cell Research Center Jeonbuk National University Jeonju Department of Life Science Jeonbuk National University

Proton exchange membrane fuel cells （PEMFCs） provide an appealing sustainable energy system,with the solid-electrolyte membrane playing a crucial role in its overall ***,sulfonated poly（1,4-phenylene ether-ether sulfone）(SPEES),an aromatic hydrocarbon polymer,has garnered considerable attention as an alternative to Nafion ***,the long-term durability and stability of SPEES present a significant *** this context,we introduce a potential solution in the form of an additive,specifically a core–shell-based amine-functionalized iron titanate （A–Fe2TiO5）,which holds promise for improving the lifetime,proton conductivity,and power density of SPEES in *** modified SPEES/A–Fe2TiO5composite membranes exhibited notable characteristics,including high water uptake,enhanced thermomechanical stability,and oxidative ***,the SPEES membrane loaded with 1.2 wt%of A–Fe2TiO5demonstrates a maximum proton conductivity of 155 mS cm-1,a twofold increase compared to the SPEES membrane,at 80°C under 100%relative humidity （RH）.Furthermore,the 1.2 wt%of A–Fe2TiO5/SPEES composite membranes exhibited a maximum power density of 397.37 mW cm-2and a current density of 1148 mA cm-2at 60°C under 100%RH,with an opencircuit voltage decay of 0.05 m V/h during 103 h of continuous *** study offers significant insights into the development and understanding of innovative SPEES nanocomposite membranes for PEMFC applications.

关键词： Composite membranes

An Artificial Intelligence‑Assisted Flexible and Wearable Mechanoluminescent Strain Sensor System

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Nano-Micro Letters 2025年第3期17卷 217-231页

作者： Yan dong Wenzheng An Zihu Wang dongzhi Zhang College of Control Science and Engineering China University of Petroleum(East China)Qingdao 266580People’s Republic of China

The complex wiring,bulky data collection devices,and difficulty in fast and on-site data interpretation significantly limit the practical application of flexible strain sensors as wearable *** tackle these challenges,this work develops an artificial intelligenceassisted,wireless,flexible,and wearable mechanoluminescent strain sensor system(AIFWMLS)by integration of deep learning neural network-based color data processing system(CDPS)with a sandwich-structured flexible mechanoluminescent sensor(SFLC)*** SFLC film shows remarkable and robust mechanoluminescent performance with a simple structure for easy *** CDPS system can rapidly and accurately extract and interpret the color of the SFLC film to strain values with auto-correction of errors caused by the varying color temperature,which significantly improves the accuracy of the predicted strain.A smart glove mechanoluminescent sensor system demonstrates the great potential of the AIFWMLS system in human gesture ***,the versatile SFLC film can also serve as a encryption *** integration of deep learning neural network-based artificial intelligence and SFLC film provides a promising strategy to break the“color to strain value”bottleneck that hinders the practical application of flexible colorimetric strain sensors,which could promote the development of wearable and flexible strain sensors from laboratory research to consumer markets.

关键词： Mechanoluminescent Strain sensor Flexible Deep learning Wireless

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

医学院校专业教师育人长效机制的构建

中华医学教育杂志 2016年第4期36卷 526-529页

作者：姚乐董雨琴杨元宵杭州医学院学生处 310053 杭州医学院人事处 310053 浙江中医药大学药学院学生办公室杭州310053

高校所有课程都具有育人功能,所有教师都负有育人责任.但在实际操作过程中,专业教师要不要育人、想不想育人、会不会育人、能不能育好人的问题,长期困扰着高校的管理者.本文系统梳理了专业教师育人中存在的“不想做”“不敢做”“不会... 详细信息

高校所有课程都具有育人功能,所有教师都负有育人责任.但在实际操作过程中,专业教师要不要育人、想不想育人、会不会育人、能不能育好人的问题,长期困扰着高校的管理者.本文系统梳理了专业教师育人中存在的“不想做”“不敢做”“不会做”“不常做”的问题,并结合医学院校工作实际,围绕健全工作组织体系、完善工作项目体系、形成工作考评体系,对构建专业教师育人长效机制进行了深入的思考和探索.

关键词：医学院校教师育人全员育人长效机制

同方期刊数据库

Force and impulse multi-sensor based on flexible gate dielectric field effect transistor

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 214-220页

作者： Chao Tan Junling Lü Chunchi Zhang dong Liang Lei Yang Zegao Wang College of Materials Science and Engineering Sichuan UniversityChengdu 610065China The 54th Research Institute of China Electronics Technology Group Corporation Shijiazhuang 050081China

Nowadays,force sensors play an important role in industrial production,electronic information,medical health,and many other ***-dimensional material-based filed effect transistor(2D-FET)sensors are competitive with nano-level size,lower power consumption,and accurate ***,few of them has the capability of impulse detection which is a path function,expressing the cumulative effect of the force on the particle over a period of *** we fabricated the flexible polymethyl methacrylate(PMMA)gate dielectric MoS_(2)-FET for force and impulse sensor *** systematically investigated the responses of the sensor to constant force and varying forces,and achieved the conversion factors of the drain current signals(I_(ds))to the detected impulse(I).The applied force was detected and recorded by I_(ds)with a low power consumption of~30 *** sensitivity of the device can reach~8000%and the 4×1 sensor array is able to detect and locate the normal force applied on ***,there was almost no performance loss for the device as left in the air for two months.

关键词： flexible gate dielectric transistor force sensor impulse sensor force sensor array

具有趋化和Allee效应的有毒浮游动植物模型的动力学分析

在线全文

学校读者我要写书评

暂无评论

数学理论与应用 2023年第4期43卷 1-28页

作者：董玉琴陈绍瑜戴斌祥中南大学数学与统计学院长沙410083 恩施职业技术学院公共课部恩施445000

本文证明具有趋化和Allee效应的有毒浮游动植物模型在无流通边界的光滑有界区域中解的全局存在性和有界性,这一结果在任意空间维度和趋化系数较小时成立?当趋化系数超过某个阈值时,模型的正齐次稳态解将失去它的稳定性,而非齐次正稳态... 详细信息

本文证明具有趋化和Allee效应的有毒浮游动植物模型在无流通边界的光滑有界区域中解的全局存在性和有界性,这一结果在任意空间维度和趋化系数较小时成立?当趋化系数超过某个阈值时,模型的正齐次稳态解将失去它的稳定性,而非齐次正稳态解从齐次稳态解处分支出来.文章最后将进行数值模拟.

关键词：趋化有毒的浮游植物浮游动物 Allee效应

A Hybrid Approach for Pavement Crack Detection Using Mask R-CNN and Vision Transformer Model

在线全文

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2025年第1期82卷 561-577页

作者： Shorouq Alshawabkeh Li Wu Daojun dong Yao Cheng Liping Li Faculty of Engineering China University of GeosciencesWuhan430074China

Detecting pavement cracks is critical for road safety and infrastructure *** methods,relying on manual inspection and basic image processing,are time-consuming and prone to *** deep-learning(DL)methods automate crack detection,but many still struggle with variable crack patterns and environmental *** study aims to address these limitations by introducing the Masker Transformer,a novel hybrid deep learning model that integrates the precise localization capabilities of Mask Region-based Convolutional Neural Network(Mask R-CNN)with the global contextual awareness of Vision Transformer(ViT).The research focuses on leveraging the strengths of both architectures to enhance segmentation accuracy and adaptability across different pavement *** evaluated the performance of theMaskerTransformer against other state-of-theartmodels such asU-Net,TransformerU-Net(TransUNet),U-NetTransformer(UNETr),SwinU-NetTransformer(Swin-UNETr),You Only Look Once version 8(YoloV8),and Mask R-CNN using two benchmark datasets:Crack500 and *** findings reveal that the MaskerTransformer significantly outperforms the existing models,achieving the highest Dice SimilarityCoefficient(DSC),precision,recall,and F1-Score across both ***,the model attained a DSC of 80.04%on Crack500 and 91.37%on DeepCrack,demonstrating superior segmentation accuracy and *** high precision and recall rates further substantiate its effectiveness in real-world applications,suggesting that the Masker Transformer can serve as a robust tool for automated pavement crack detection,potentially replacing more traditional methods.

关键词： Pavement crack segmentation transportation deep learning vision transformer Mask R-CNN image segmentation