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Journal of Energy Chemistry 2024年第10期97卷 371-378页

作者： Juntao Si Xiaoying Li Yixuan Li Kuo Cao yiran zhu Chunhua Chen CAS Key Laboratory of Precision and Intelligent Chemistry Department of Materials Science and Engineering University of Science and Technology of China

The lithium metal anode is hailed as the desired "holy grail" for the forthcoming generation of highenergy-density batteries,given its astounding theoretical capacity and low ***,the formation and growth of dendrites seriously compromise battery life and ***,an yttriastabilized bismuth oxide（YSB） layer is fabricated on the polypropylene（PP） separator,where YSB reacts with Li anode in-situ in the cell to form a multi-component composite interlayer consisting of Li3Bi,Li2O,and *** interlayer can function not only as a redistributor to regulate Li+distribution but also as an anion adsorber to increase the Li+transference number from 0.37 to 0.79 for suppressing dendrite nucleation and ***,compared with the cell with a baseline separator,those with modified separators exhibit prolonged lifespan in both Li/Li symmetrical cells and Li/Cu ***,the full cells coupled with ultrahigh-loading LiFePO4display an excellent cycling performance of 1700 cycles with a high capacity retention of ～80% at 1 C,exhibiting great potential for practical *** work provides a feasible and effective new strategy for separator modification towards building a much-anticipated dendrite-free Li anode and realizing long-lifespan lithium metal batteries.

关键词： Conversion-alloying reaction Dendrite-free Lithium metal battery Multifunctional interlayer Separator

基于粒子群优化BP神经网络的激光扫描投影系统畸变预测方法

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光子学报 2024年第6期53卷 275-286页

作者：张宏韬唐芳吴坤朱亦然侯茂盛长春理工大学光电工程学院光电测控与光信息传输技术教育部重点实验室长春130022 中国人民解放军66736部队北京100095

为了精准、高效地预测和校正激光扫描投影系统的畸变误差,研究了基于粒子群优化BP神经网络的畸变预测方法。建立了BP神经网络结构,并融合粒子群优化算法对BP神经网络的权值和阈值进行优化,得出基于粒子群优化BP神经网络的激光扫描投影... 详细信息

为了精准、高效地预测和校正激光扫描投影系统的畸变误差,研究了基于粒子群优化BP神经网络的畸变预测方法。建立了BP神经网络结构,并融合粒子群优化算法对BP神经网络的权值和阈值进行优化,得出基于粒子群优化BP神经网络的激光扫描投影系统投影畸变预测模型。选取距激光扫描投影仪器两米的待投影面上的理论坐标点及各点相应畸变值Δx作为粒子群优化BP神经网络的训练数据集,将待投影面上实际投影位置坐标代入训练好的粒子群优化BP神经网络进行预测得到预测畸变值输出,并与实际畸变值对比,最后,引入Elman神经网络预测模型的预测结果与所研究预测方法进行对比。结果表明:在±30°的全视场扫描投影范围内粒子群优化BP神经网络预测模型的均方根误差为0.0176 mm,解算时间仅需22.4 s,相较于Elman神经网络效率提升78.33%,预测精度及时间明显优于Elman神经网络,可以有效预测激光扫描投影系统的畸变误差。

关键词：激光扫描投影粒子群优化算法 BP神经网络误差预测二维振镜图形畸变

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仿生蜻蜓脉膜折纸结构的压缩性能研究

中国科学：技术科学 2024年第4期54卷 678-689页

作者：朱一然张海鹏翟思琦李静中国石油大学(华东)机电工程学院青岛266580

折纸结构具有折叠诱发的独特力学特性,在机器人、航空航天、材料科学等诸多工程领域有广泛的应用前景.基于膜结构设计的Kresling折纸承载能力小、折叠路径不稳定的不足,本研究利用蜻蜓脉膜的刚柔耦合结构进行仿生设计.以软质硅胶为膜、... 详细信息

折纸结构具有折叠诱发的独特力学特性,在机器人、航空航天、材料科学等诸多工程领域有广泛的应用前景.基于膜结构设计的Kresling折纸承载能力小、折叠路径不稳定的不足,本研究利用蜻蜓脉膜的刚柔耦合结构进行仿生设计.以软质硅胶为膜、硬质树脂内嵌为脉,形成柔性软膜与刚性内嵌互相包被的二级刚柔耦合类Kresling折纸结构.该折纸结构具有变刚度特性,有优异的折叠特性和较高的折叠比.准静态压缩试验结果表明,有内嵌折纸结构折叠路径单一稳定,轴向压缩量与层间转角呈现单自由度结构的特征.相对于无内嵌折纸结构,刚性内嵌限制了峰折折痕的屈曲,可显著提升其力学性能,其中n=4的构型中有内嵌结构支反力极大值提高了60.87%.同时,其支反力具有迟滞性,折纸结构具有稳定的滞回耗能特性,在1000次加载-回复循环后仅下降3.60%,未发生显著降低.

关键词：折纸仿生准静态压缩变刚度滞回耗能

社区体育服务智慧治理:应用场景、技术架构与实现路径

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西安体育学院学报 2024年第3期41卷 374-386页

作者：杨振兴刘玉朱毅然阜阳师范大学体育学院安徽阜阳236037

社区体育服务智慧治理的目的在于推进社区体育服务高质量发展。社区体育服务智慧治理的技术框架可分为治理基础、治理目标、治理内容、治理手段、治理结构。社区体育服务智慧治理需要坚持“数字转型”与“需求为本”相结合的底层逻辑,... 详细信息

社区体育服务智慧治理的目的在于推进社区体育服务高质量发展。社区体育服务智慧治理的技术框架可分为治理基础、治理目标、治理内容、治理手段、治理结构。社区体育服务智慧治理需要坚持“数字转型”与“需求为本”相结合的底层逻辑,构建出“人-技术-空间”一体的社区体育服务治理技术结构,进而夯实治理基础、创新治理手段、优化治理结构、丰富治理内容、凝练治理目标,真正推动我国社区体育服务治理现代化发展。

关键词：体育服务智慧治理技术

股权制衡度对公司金融化的影响——基于盈利能力的中介作用

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科技和产业 2024年第4期24卷 43-47页

作者：朱怡然阮书艺信阳农林学院河南信阳464000

以2018—2022年中国A股非ST非金融类上市公司的面板数据为基础,通过实证研究股权制衡度、盈利能力作用于公司金融化时遵循何种规律。结果表明,股权制衡度与公司金融化负相关,股权制衡度与盈利能力正相关,盈利能力在股权制衡度与公司金... 详细信息

以2018—2022年中国A股非ST非金融类上市公司的面板数据为基础,通过实证研究股权制衡度、盈利能力作用于公司金融化时遵循何种规律。结果表明,股权制衡度与公司金融化负相关,股权制衡度与盈利能力正相关,盈利能力在股权制衡度与公司金融化间存在部分中介效应。

关键词：股权制衡度盈利能力公司金融化

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钝性膀胱损伤16例诊疗及文献复习

创伤外科杂志 2024年第2期26卷 115-119页

作者：李燃朱毅然江百川高丽宽杨士杰河北医科大学第三医院泌尿外科石家庄050051 长江大学附属仙桃市第一人民医院泌尿外科湖北仙桃433000

目的探讨钝性膀胱损伤的诊疗方法。方法回顾性分析2021年9月—2023年1月河北医科大学第三医院救治的钝性膀胱损伤患者16例,男性12例,女性4例;年龄28~75岁,平均42.9岁;道路交通伤10例,重物砸伤3例,高处坠落伤3例。腹膜外型膀胱破裂10例,... 详细信息

目的探讨钝性膀胱损伤的诊疗方法。方法回顾性分析2021年9月—2023年1月河北医科大学第三医院救治的钝性膀胱损伤患者16例,男性12例,女性4例;年龄28~75岁,平均42.9岁;道路交通伤10例,重物砸伤3例,高处坠落伤3例。腹膜外型膀胱破裂10例,腹膜内型膀胱破裂4例,均行膀胱破裂修补术;膀胱挫伤2例,均为非手术治疗。结果本组16例患者中并发膀胱填塞2例,下肢深静脉血栓5例,最终均恢复良好。14例膀胱破裂患者一期手术成功率为100%,住院时间7~39 d,平均20.6 d;手术时长81~170 min,平均129.6 min;最终伤口均愈合良好。2例膀胱挫伤患者经非手术治疗后顺利出院。随访1~6个月,治疗效果满意。结论多方法联合评估是提高钝性膀胱损伤诊断效率的关键。对于膀胱挫伤患者,非手术治疗效果良好;对于复杂性膀胱破裂或膀胱破裂并发膀胱填塞患者,及早行膀胱破裂修补术,能够提高患者治愈率,但术后应注意预防下肢深静脉血栓形成。

关键词：钝性膀胱损伤膀胱破裂膀胱破裂修补术膀胱填塞

Genetic pathways in cerebral palsy:a review of the implications for precision diagnosis and understanding disease mechanisms

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Neural Regeneration Research 2024年第7期19卷 1499-1508页

作者： yiran Xu Yifei Li Seidu A.Richard Yanyan Sun Changlian zhu Henan Key Laboratory of Child Brain Injury and Henan Pediatric Clinical Research Center Institute of Neuroscience and The Third Affiliated Hospital of Zhengzhou UniversityZhengzhouHenan ProvinceChina National Health Council(NHC)Key Laboratory of Birth Defects Prevention Henan Key Laboratory of Population Defects PreventionZhengzhouHenan ProvinceChina Department of Human Anatomy School of Basic Medicine and Institute of NeuroscienceZhengzhou UniversityZhengzhouHenan ProvinceChina Center for Brain Repair and Rehabilitation Institute of Neuroscience and PhysiologyUniversity of GothenburgGothenburgSweden

Ce rebral palsy is a diagnostic term utilized to describe a group of permanent disorders affecting movement and *** with cerebral palsy are often only capable of limited activity,resulting from non-progressive disturbances in the fetal or neonatal *** disturbances severely impact the child’s daily life and impose a substantial economic burden on the *** cerebral palsy encompasses various brain injuries leading to similar clinical outcomes,the unde rstanding of its etiological pathways remains incomplete owing to its complexity and *** review aims to summarize the current knowledge on the genetic factors influencing cerebral palsy *** is now widely acknowledged that genetic mutations and alterations play a pivotal role in cerebral palsy development,which can be further influenced by environmental fa *** pite continuous research endeavors,the underlying fa ctors contributing to cerebral palsy remain are still ***,significant progress has been made in genetic research that has markedly enhanced our comprehension of the genetic factors underlying cerebral palsy *** r,these genetic factors have been categorized based on the identified gene mutations in patients through clinical genotyping,including thrombosis,angiogenesis,mitochondrial and oxidative phosphorylation function,neuronal migration,and cellular ***,exploring targeted genotypes holds potential for precision *** conclusion,advancements in genetic research have substantially improved our understanding of the genetic causes underlying cerebral *** breakthroughs have the potential to pave the way for new treatments and therapies,consequently shaping the future of cerebral palsy research and its clinical *** investigation of cerebral palsy genetics holds the potential to significantly advance treatments and management *** elucidating the underlying cellular mechanisms,w

关键词： cerebral palsy environmental factors etiology genetic factors genetic mutation movement disorder spastic diplegia

Thermofluidic investigations of oil natural transformer:Closed-loop modelling and experimental validation

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High Voltage 2024年第1期9卷 230-240页

作者： Yuan Li yiran Gao Chen Wang Chao zhu Ying Li Yuankai Wang Guanjun Zhang State Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong UniversityXi'anChina Electric Power Research Institute of State Grid Shaanxi Electric Power Co. Ltd.Xi'anChina TBEA Hengyang Transformer Co. Ltd.HengyangChina

Excessively high temperatures inside a power transformer can accelerate the ageing rate and even cause unplanned *** estimating the hot-spot temperature(HST)of a power transformer is important for regulating the load and ensuring long-term *** this study,a closed-loop model of a 110-kV product transformer with an oil natural/air forced(ONAF)cooling mode is built to predict HST,in which the compression ratio of windings,equivalent heat source and radiator geometry are *** to the flow field of the winding,the‘dead oil zone’and reverse oil flow are observed in the horizontal oil *** accuracy of the proposed model is experimentally validated by temperature-rise *** results show that the absolute errors between the measured results and simulation are below 5°C,and the average error is~2°***,the arrangements of windings and radiators are studied to enhance the oil *** adding 5 washers to the high-voltage winding,the average temperature can be decreased by 6°C compared with the case without a *** the radiator can also mitigate the characteristic temperatures,and the optimal height difference between the radiator and winding centre is suggested to be 0.66 m.

关键词： winding arrangement adding

Machine Learning-Based Temperature and Wind Forecasts in the Zhangjiakou Competition Zone during the Beijing 2022 Winter Olympic Games

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Journal of Meteorological Research 2024年第4期38卷 664-679页

作者： zhuo SUN Jiangbo LI Ruiqiang GUO yiran ZHANG Gang zhu Xiaoliang YANG China Meteorological Administration Xiong'an Atmospheric Boundary Layer Key Laboratory Xiong'an New Area 071800 Hebei Key Laboratory of Meteorology and Ecological Environment Shijiazhuang 050021 Hebei Meteorological Observatory Shijiazhuang 050021 College of Computer and Cyber Security Hebei Normal UniversityShijiazhuang 050024

Weather forecasting for the Zhangjiakou competition zone of the Beijing 2022 Winter Olympic Games is a challenging task due to its complex *** weather prediction models generally perform poorly for cold air pools and winds over complex terrains,due to their low spatiotemporal resolution and limitations in the description of dynamics,thermodynamics,and microphysics in mountainous *** study proposes an ensemble-learning model,named ENSL,for surface temperature and wind forecasts at the venues of the Zhangjiakou competition zone,by integrating five individual models—linear regression,random forest,gradient boosting decision tree,support vector machine,and artificial neural network(ANN),with a ridge regression as meta *** ENSL employs predictors from the high-resolution ECMWF model forecast(ECMWF-HRES) data and topography data,and targets from automatic weather station *** categories of predictors(synoptic-pattern related fields,surface element fields,terrain,and temporal features) are fed into *** results demonstrate that ENSL achieves better performance and generalization than individual *** root-mean-square error(RMSE) for the temperature and wind speed predictions is reduced by 48.2% and 28.5%,respectively,relative to *** the gust speed,the performance of ENSL is consistent with ANN(best individual model) in the whole dataset,whereas ENSL outperforms on extreme gust samples(42.7% compared with 38.7% obtained by ECMWF-HRES in terms of RMSE reduction).Sensitivity analysis of predictors in the four categories shows that ENSL fits their feature importance rankings and physical explanations effectively.

关键词： machine learning ensemble learning post-processing cold air pools mountain Beijing 2022 Winter Olympic Games

Electro-optically tunable microdisk laser on Er^(3+)-doped lithium niobate thin film

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Chinese Optics Letters 2022年第1期20卷 60-63页

作者： yiran zhu Yuan Zhou Zhe Wang Zhiwei Fang Zhaoxiang Liu Wei Chen Min Wang Haisu Zhang Ya Cheng The Extreme Optoelectromechanics Laboratory(XXL) School of Physics and Electronic ScienceEast China Normal UniversityShanghai 200241China State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-intense Laser Science Shanghai Institute of Optics and Fine Mechanics(SIOM)Chinese Academy of Sciences(CAS)Shanghai 201800China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China School of Physical Science and Technology ShanghaiTech UniversityShanghai 200031China State Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Laser SpectroscopyShanxi UniversityTaiyuan 030006China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China Shanghai Research Center for Quantum Sciences Shanghai 201315China

We report an electro-optically(EO)tunable microdisk laser fabricated on the erbium(Er^(3+))-doped lithium niobate on insulator(LNOI) *** applying a variable voltage on a pair of integrated chromium(Cr) microelectrodes fabricated near the LNOI microdisk,electro-optic modulation with an effective resonance-frequency tuning rate of 2.6 GHz/100 V has been *** gives rise to a tuning range of 45 pm when the electric voltage is varied between-200 V and 200 V.

关键词： electro-optically tunable microlaser Er^(3+)doping lithium niobate microdisk