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Early Triassic Legoupil Formation in Schmidt Peninsula,Antarctic Peninsula:Provenance and Depositional Settings

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Journal of Earth Science 2024年第2期35卷 317-331页

作者： Chao Zhang Ying-Chun cui Chen-Guang Liu Fang-hua cui Lu-Yuan Wang Wei-Qiang Zhang School of Resources and Environmental Engineering Shandong University of TechnologyZibo255049China MNR Key Laboratory for Polar Science Polar Research Institute of ChinaShanghai201209China Key Laboratory of Marine Sedimentology and Environmental Geology First Institute of OceanographyState Oceanic AdministrationQingdao266061China Laboratory for Marine Geology Qingdao National Laboratory for Marine Science and TechnologyQingdao266061China Key Laboratory of Mineral Resources Evaluation in Northeast Asia Ministry of Land and ResourcesChangchun130061China

Geochemical compositions can be used to determine the tectonic setting of sedimentary basins,while where the link of source to sink is no longer preserved,detrital zircon age patterns can aid in resolving the original basin setting.The metasedimentary Legoupil Formation,located at Cape Legoupil and the Schmidt Peninsula,could give a hint for the tectonic evolution of Antarctic Peninsula.In this contribution,we constrain the sedimentary provenance of the Legoupil Formation through geochemistry and detrital zircon U-Pb geochronology.The petrography and geochemical features indicate that the provenance of the Legoupil Formation could be felsic rocks.Detrital zircon grains record a steady supply of Permian and Ordovician material into the Legoupil Formation.The youngest concordant zircon ages of 262 Ma suggest that the depositional time of Legoupil Formation is no older than Late Permian.The detrital zircon age spectrum of Legoupil Formation suggests that the Legoupil Formation sediments should be derived from regional sources endemic to western Gondwana prior to its breakup.Together with the previous studies,geochemistry and detrital zircons reflect an active continental margin tectonic setting and the detrital zircon spectra of Legoupil Formation are similar to the ones deposited in forearc tectonic setting.

关键词： Schmidt Peninsula Legoupil Formation Trinity Peninsula Group detrital zircons Antarctic Peninsula geochemistry

Regulating electrochemical performances of lithium battery by external physical field

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Rare Metals 2024年第6期43卷 2391-2417页

作者： Shi-Kang Wang Shuai Wu Yi-Cheng Song Hassanien Gomaa cui-hua An Qi-Bo Deng Ning Hu School of Mechanical Engineering School of Materials Science and EngineeringHebei University of Technology Shanghai Key Laboratory of Mechanics in Energy Engineering Department of Chemistry Faculty of ScienceAl-Azhar University Tianjin Key Laboratory of Power Transmission and Safety Technology for New Energy Vehicles State Key Laboratory of Reliability and Intelligence Electrical Equipment Key Laboratory of Advanced Intelligent Protective Equipment TechnologyMinistry of EducationHebei University of Technology

Lithium batteries have always played a key role in the field of new energy sources.However,non-controllable lithium dendrites and volume dilatation of metallic lithium in batteries with lithium metal as anodes have limited their development.Recently,a large number of studies have shown that the electrochemical performances of lithium batteries can be enhanced through the regulation of external physical fields.Especially,it significantly hinders the growth of lithium dendrites and promoting the reaction kinetics.This review summarizes recent innovations in the investigation of various physical fields of lithium batteries.The application of magnetic field in the synthesis of lithium battery electrode materials is introduced.The influence factors and regulation mechanism of various physical fields on the electrochemical performance of lithium batteries are reviewed emphatically.In addition,the current research status and existing challenges,along with future directions for the evolution of lithium batteries,are minutely discussed and prospected.New strategies for the further evolution of lithium batteries have also been provided.

关键词： Lithium battery External field assist Reaction kinetics Lithium dendrite

A lithium–tin fluoride anode enabled by ionic/electronic conductive paths for garnet-based solid-state lithium metal batteries

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Rare Metals 2024年第2期43卷 575-587页

作者： Lei Zhang Qian-Kun Meng Xiang-Ping Feng Ming Shen Yu-Qing Zhang Quan-Chao Zhuang Run-Guo Zheng Zhi-Yuan Wang Yan-hua cui Hong-Yu Sun Yan-Guo Liu School of Materials Science and Engineering Northeastern UniversityShenyang110819China School of Resources and Materials Northeastern University at QinhuangdaoQinhuangdao066004China School of Materials and Physics China University of Mining&TechnologyXuzhou221116China Institute of Electronic Engineering China Academy of Engineering PhysicsMianyang621900China

The high energy density and stability of solid-state lithium metal batteries(SSLMBs)have garnered great ***-type oxides,especially Li_(6.4)La_(3)Zr_(1.4)Ta_(0.6)O_(12)(LLZTO),with high ionic conductivity,wide electrochemical window,and stability to Li metal anode,are promising solid-state electrolyte(SSEs)materials for SSLMBs.However,Li/LLZTO interface issues including high interface resistance,inhomogeneous Li deposition,and Li dendrite growth have hindered the practical application of SSLMBs.Herein,a multi-functional Li–SnF_(2) composite anode with Li,LiF,and Li-Sn alloy was specifically designed and prepared.The composite anode improves the wettability to LLZTO,constructing an intimate contact interface between it and LLZTO.Meanwhile,ionic/electronic conductive paths in situ formed at the interface can effectively uniform Li deposition and suppress Li dendrite.The solid-state symmetric cell exhibits low interface resistance(11Ω·cm^(2)) and high critical current density(1.3 mA·cm^(−2))at 25℃.The full SSLMB based on LiFePO_(4) or LiNi_(0.5)Co_(0.2)Mn_(0.3)O_(2) cathode also shows stable cycling performance and high rate capability.This work provides a new composite anode strategy for achieving high-energy density and high-safety SSLMBs.

关键词： Solid-state lithium metal batteries(SSLMBs) Lithium-tin fluoride anode Ionic/electronic conductive Interface resistance Lithium dendrite

An overview of acupuncture for the treatment of limb spasticity in cerebral palsy-A mini review

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Clinical Research Communications 2024年第1期7卷 18-23页

作者： Xiao-yu Shen Jian-guo Zhong cui-hua Dan Rehabilitation Department The Second Affiliated Hospital of Chengdu Medical College(China National Nuclear Corporation 416 Hospital)Chengdu 610051China Rehabilitation Department Chengdu Medical CollegeChengdu 610500China

Cerebral palsy is a common chronic disabling disease in children with special needs,and rehabilitation for cerebral palsy is characterized by a long period,multiple methods and limited efficacy.Due to the limited motor function of cerebral palsy patients,the quality of life of patients is reduced,and their ability to participate in society is reduced,so the improvement of patients’motor function has become an important goal of cerebral palsy rehabilitation.The motor function of cerebral palsy has become an important goal of cerebral palsy rehabilitation.Limb spasticity is one of the main clinical signs of cerebral palsy patients,and the more severe the limb spasticity is,the greater the impact on the patient's motor function,so improving limb spasticity in patients with cerebral palsy is particularly important.Acupuncture,as a Chinese medicine treatment method,has been widely used in the clinical treatment of cerebral palsy in China,and has shown certain efficacy.To promote the clinical application of acupuncture technique in cerebral palsy limb spasticity,this paper analyses and summarizes the relevant literature on acupuncture treatment of cerebral palsy limb spasticity summarizes the current status of the clinical application of acupuncture in cerebral palsy limb spasticity,and provides clinical references for the reasonable application of acupuncture in cerebral palsy limb spasticity.

关键词： cerebral palsy limb spasticity acupuncture treatment mini review

双离合器变速箱换挡集成学习控制器设计及分析

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机械管理开发 2024年第5期39卷 47-49页

作者：崔华新乡职业技术学院交通学院河南新乡453000

为了提高车辆运行的稳定性,设计了一种双离合器DCT变速箱换挡集成学习控制器。基于预测模型建立MPC控制器,以补偿转矩保障转速精准追踪。研究结果表明,在0.11 s时DCT开始出现升挡转矩相,车速整体维持稳定变化的态势,车辆冲击度的最大值... 详细信息

为了提高车辆运行的稳定性,设计了一种双离合器DCT变速箱换挡集成学习控制器。基于预测模型建立MPC控制器,以补偿转矩保障转速精准追踪。研究结果表明,在0.11 s时DCT开始出现升挡转矩相,车速整体维持稳定变化的态势,车辆冲击度的最大值是4.8 m/s^(3),有利于大大提高换挡的稳定性。相比其他控制方法,基于经验知识MPC换挡方案获得更优的平顺性控制效果,滑摩功也发生降低,可以更快完成动力响应。该研究有助于提高汽车自动控制,为后续的换挡控制奠定理论基础。

关键词：双离合器变速箱换挡控制集成学习模型预测

反身性视域下电子竞技体育化过程中的价值冲突与消解路径

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武汉体育学院学报 2024年第5期58卷 43-50页

作者：张维凯崔华孔振兴中国人民公安大学警体战训学院北京100038 北京体育大学体育信息研究中心北京100084 北京体育大学运动与体质健康教育部重点实验室北京100084

基于反思、悖论和诠释学循环反身性三维理论的方法论指导,利用文献与逻辑分析方法,对电子竞技在体育化过程中价值追求的转变及其与体育的价值冲突进行辨识和讨论,发现电子竞技在体育化过程中,价值追求由客观外在性向主体内生性转变,并... 详细信息

基于反思、悖论和诠释学循环反身性三维理论的方法论指导,利用文献与逻辑分析方法,对电子竞技在体育化过程中价值追求的转变及其与体育的价值冲突进行辨识和讨论,发现电子竞技在体育化过程中,价值追求由客观外在性向主体内生性转变,并引发了其与体育之间的价值冲突,形成了“电竞不属于体育”的发展悖论。基于悖论,在明晰冲突的基础上,利用诠释学循环对电子竞技与体育之间的关系进行了辩证分析,并提出依据体育的结构与电子竞技的本质,对电子竞技要素进行创造性建构,以彰显体育特质,消解二者之间的价值冲突,促进电子竞技体育化发展的良性循环。

关键词：电子竞技体育化反身性价值冲突消解路径

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面向密度分布不均数据的近邻优化密度峰值聚类算法

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控制与决策 2024年第3期39卷 919-928页

作者：陈蔚昌赵嘉肖人彬王晖崔志华南昌工程学院信息工程学院南昌330099 华中科技大学人工智能与自动化学院武汉430074 太原科技大学计算机科学与技术学院太原030024

密度分布不均数据是指类簇间样本分布疏密程度不同的数据.密度峰值聚类(DPC)算法在处理密度分布不均数据时,倾向于在密度较高区域内找到类簇中心,并易将稀疏类簇的样本分配给密集类簇.为避免上述缺陷,提出一种面向密度分布不均数据的近... 详细信息

密度分布不均数据是指类簇间样本分布疏密程度不同的数据.密度峰值聚类(DPC)算法在处理密度分布不均数据时,倾向于在密度较高区域内找到类簇中心,并易将稀疏类簇的样本分配给密集类簇.为避免上述缺陷,提出一种面向密度分布不均数据的近邻优化密度峰值聚类(DPC-NNO)算法. DPC-NNO算法结合逆近邻和k近邻定义新的局部密度,提高稀疏样本的局部密度,使算法能更准确地找到类簇中心;定义分配策略时引入共享近邻,计算样本间相似性,构造相似矩阵,使同一类簇样本联系更紧密,避免错误分配样本.将所提出的DPC-NNO算法与IDPC-FA、DPCSA、FNDPC、FKNN-DPC、DPC算法进行对比,实验结果表明, DPC-NNO算法在处理密度分布不均数据时能获得优异的聚类效果,对于复杂数据集和UCI数据集, DPC-NNO算法的综合性能优于对比算法.

关键词：密度峰值聚类分析密度分布不均逆近邻共享近邻样本相似性

碳排放绩效的空间关联网络结构及其形成机制——以长江经济带为例

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中国环境科学 2024年第5期44卷 2867-2878页

作者：林明裕崔兴华江西财经大学统计与数据科学学院江西南昌330013 江西财经大学经济学院江西南昌330013

以2006~2019年长江经济带城市为研究对象,通过引入修正引力模型量化分析长江经济带碳排放绩效的空间关联强度,并进一步运用社会网络分析方法探究空间关联网络的结构特征和形成机制.研究表明:(1)长三角经济带城市碳排放绩效整体呈现上升... 详细信息

以2006~2019年长江经济带城市为研究对象,通过引入修正引力模型量化分析长江经济带碳排放绩效的空间关联强度,并进一步运用社会网络分析方法探究空间关联网络的结构特征和形成机制.研究表明:(1)长三角经济带城市碳排放绩效整体呈现上升趋势,具有明显的马太和辐射效应,其空间关联强度整体不高、存在减弱的趋势,空间网络结构的连通性和稳健性较强、网络冗余路径逐渐减少但不具有等级森严特征.(2)从不同流域特征来看,长江中下游城市群处于空间网络的相对中心地位,在长江经济带城市碳排放绩效空间网络中扮演着领导者角色,而上游地区城市群处于相对劣势地位,发挥着中枢和传导作用.(3)从空间关联模块来看,长江经济带城市碳排放绩效空间关联模块可划分为“净溢出”、“净受益”和“双向溢出”模块,模块内部各城市之间具有明显的聚集和空间关联效应,各模块之间还存在明显的协同和空间溢出效应.(4)从影响机制来看,空间邻接关系、气候变化差异、交通基础差异、人口规模差异和能源结构差异在长江经济带城市碳排放绩效空间关联网络结构的形成与演化中发挥着重要作用.

关键词：城市碳排放绩效空间关联网络社会网络分析二次指派程序

Hot deformation behavior of a spray-deposited AZ31 magnesium alloy

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Rare Metals 2009年第1期28卷 91-97页

作者： LI Yongbing CHEN Yunbo cui hua DING Jie ZUO Lingli ZHANG Jishan Advanced Manufacture Technology Center China Academy of Machinery Science and Technology Beijing 100083 China School of Materials Science and Engineering University of Science and Technology Beijing Beijing 100083 China State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing Beijing 100083 China

The flow stress behavior of an as-spray-deposited AZ31 magnesium alloy with fine grains was investigated by means of compression tests with a Gleeble 1500 thermal mechanical simulator at isothermal constant strain rates of 0.01, 0.1, 1.0, and 10 s^-1; the testing temperatures ranged from 623 to 723 K. It is demonstrated that a linear equation can be fitted between the Zemer-Hollomon parameter Z and stress in a double-log scale. The effect of deformation parameters on the behavior of recrystallization was analyzed. Dynamic recrystallization （DRX） generally occurs at a higher temperature and at a lower strain rate. The constitutive equation of the spray-deposited AZ31 magnesium alloy is presented by calculating the deformation activation energy （199.8 kJ·mol^-1）. The as-spray-formed AZ31 alloy is easier for DRX nucleation at elevated temperatures due to the fine grain, which provides a large amount of nucleation sites and a high-diffusivity path for the atom.

关键词： magnesium alloy spray forming flow stress dynamic recrystallization