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Plasma Surface Modification of Li_(2)TiSiO_(5)Anode for Lithium-Ion Batteries

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Energy Engineering 2024年第10期121卷 2769-2776页

作者： Shangqi Sun lingchao Xiao Qifeng Qian Yunfeng Deng School of Materials Science and Engineering Tianjin UniversityTianjin300072China School of Mechanical Engineering and Rail Transit Changzhou UniversityChangzhou213164China Zhejiang Sunoren Solar Technology Co. Ltd.Haining314400China

Solving intrinsic structural problems such as low conductivity is the main challenge to promote the commercial application of Li_(2)TiSiO_(5).In this study,Li_(2)TiSiO_(5)is synthesized by the sol-gelmethod,and the surface modification of Li_(2)TiSiO_(5)is carried out at different temperatures using low-temperature plasma to enhance its lithium storage *** morphological structure and electrochemical tests demonstrate that plasma treatment can improve the degree of *** peak position of the plasma-treated Li_(2)TiSiO_(5)is shifted to a lower angle,and the shift angle increases with increasing sputtering ***_(2)TiSiO_(5)after 300 W bombardment shows excellent capacity(144.7 mA·hg^(−1)after 500 cycles at 0.1 Ag^(−1))and rate performance(140 mA·hg^(−1)at 5 Ag^(−1)).Electrochemical analysis indicates that excellent electrochemical performance is attributed to the enhancement of electronic and ionic conductivity by plasma bombardment.

关键词： Plasma Li_(2)TiSiO_(5) surface modification anode

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基于自适应秩动态张量分析的短时交通流预测

物联网学报 2019年第3期3卷 18-25页

作者：何领朝林东冯心欣福州大学物理与信息工程学院

在智能交通系统中,短时交通流预测可以为路线规划、交通管理和公共安全等领域提供数据支撑。为了提高数据缺失和异常情况下的预测准确性,提出了一种基于自适应秩动态张量分析的算法来进行短时交通流预测。首先构造了覆盖周、天、时间窗... 详细信息

在智能交通系统中,短时交通流预测可以为路线规划、交通管理和公共安全等领域提供数据支撑。为了提高数据缺失和异常情况下的预测准确性,提出了一种基于自适应秩动态张量分析的算法来进行短时交通流预测。首先构造了覆盖周、天、时间窗口和空间4个维度的张量,以挖掘交通流数据之间的多模相关性。其次,利用滑动窗口模型,形成动态结构的张量流数据。然后将主成分分析算法扩展成可以接收张量输入的离线张量分析算法,并引入自适应秩和遗忘因子形成自适应秩动态张量分析算法。最后将张量流数据输入自适应秩动态张量分析算法中,实现对短时交通流数据的预测。实验结果显示,即使在数据有缺失的情况下,自适应秩动态张量分析算法也能实现良好的预测。

关键词：短时交通流预测数据缺失动态张量分析多模信息

Dynamics of lump chains for the BKP equation describing propagation of nonlinear waves

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Chinese Physics B 2023年第4期32卷 226-236页

作者：赵忠龙和玲超 Abdul-Majid Wazwaz School of Mathematics North University of ChinaTaiyuan 030051China College of Mathematics Taiyuan University of TechnologyTaiyuan 030024China Department of Mathematics Saint Xavier UniversityChicagoIL 60655USA

A large member of lump chain solutions of the(2+1)-dimensional Bogoyavlenskii-Kadomtsev-Petviashvili(BKP)equation are constructed by means of theτ-function in the form of *** lump chains are formed by periodic arrangement of individual lumps and travel with distinct group and *** analytical method related dominant regions of polygon is developed to analyze the interaction dynamics of the multiple lump *** degenerate structures of parallel,superimposed,and molecular lump chains are *** interaction solutions between lump chains and kink-solitons are investigated,where the kink-solitons lie on the boundaries of dominant region determined by the constant term in theτ-***,the hybrid solutions consisting of lump chains and individual lumps controlled by the parameter with high rank and depth are *** analytical method presented in this paper can be further extended to other integrable systems to explore complex wave structures.

关键词： lump chains interaction solutions BKP equation

Spent graphite regeneration:Exploring diverse repairing manners with impurities-catalyzing effect towards high performance and low energy consumption

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Journal of Energy Chemistry 2024年第4期91卷 656-669页

作者： Yu Dong Zihao Zeng Zhengqiao Yuan Bing Wang Hai Lei Wenqing Zhao Wuyun Ai lingchao Kong Yue Yang Peng Ge School of Minerals Processing and Bioengineering Central South UniversityChangsha 410083HunanChina henan Institute of Advanced Technology Zhengzhou UniversityZhengzhou 450001HenanChina Shenzhen Xinmao New Energy Technology Co. LTDShenzhen 518100GuangdongChina

Spent battery recycling has received considerable attention because of its economic and environmental potential.A large amount of retired graphite has been produced as the main electrode material,accompanied by a detailed exploration of the repair ***,they still suffer from unclear repair mechanisms and physicochemical *** this study,spent graphite was repaired employing three methodologies:pickling-sintering,pyrogenic-recovery,and high-temperature *** to the catalytic effect of the metal-based impurities and temperature control,the as-obtained samples displayed an ordered transformation,including the interlayer distance,crystalline degree,and grain *** anodes of lithium ions batteries,the capacity of repaired samples reached up to 310 mA h g^(-1)above after 300loops at 1.0 C,similar to that of commercial ***,benefitting from the effective assembly of carbon atoms in internal structure of graphite at>1400℃,their initial coulombic efficiency were>87%.Even at 2.0 C,the capacity of samples remained approximately 244 mA h g^(-1)after 500 *** electrochemical and kinetic analyses revealed that a low temperature enhanced the isotropy,thereby enhancing the rate ***,economic and environmental analyses revealed that the revenue obtained through suitable pyrogenic-recovering manners was approximately the largest value(5500$t^(-1)).Thus,this study is expected to clarify the in-depth effect of different repair methods on the traits of graphite,while offering all-round evaluations of repaired graphite.

关键词： Spent graphite regeneration Repair Temperature treatment

Recent advances in photochemistry for positron emission tomography imaging

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Chinese Chemical Letters 2024年第8期35卷 149-162页

作者： Jing-Jing Zhang Lujun Lou Rui Lv Jiahui Chen Yinlong Li Guangwei Wu lingchao Cai Steven H.Liang Zhen Chen Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest BiomassJiangsu Key Lab of Biomass-Based Green Fuels and ChemicalsInternational Innovation Center for Forest Chemicals and MaterialsCollege of Chemical EngineeringNanjing Forestry UniversityNanjing 210037China Department of Radiology and Imaging Sciences Emory UniversityAtlantaGA 30322United States

As a powerful noninvasive imaging technology,positron emission tomography(PET)has been playing an important role in disease theranostics and drug *** successful application of PET relies on not only the biological properties of PET tracers but also the availability of facile and efficient radiochemical reactions to enable practical production and widespread use of PET *** recently,photochemistry is emerging as a novel,mild and efficient approach to generating PET *** this review,we focus on the recent advances in newly developed photocatalytic radiochemical reactions,innovation on automated photochemical radiosynthesis modules,as well as implementation in late-stage radiolabeling and radio-pharmaceutical synthesis for PET *** believe that this review will inspire the development of more promising radiolabeling protocols for the preparation of clinically useful PET agents.

关键词： Positron emission tomography(PET) Fluorine-18 Carbon-11 Photocatalysis Automation Late-stage functionalization

构建共建共治共享社区治理格局的探索之路——访杭州市民政局局长何凌超

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社会治理 2019年第12期 19-24页

作者：杨婷何凌超杭州市民政局

杭州市作为浙江省政治、经济、科教和文化中心,长三角南翼重要中心城市,迄今已获得联合国人居奖、国际花园城市、创建全国文明城市工作先进城市等荣誉称号,是全国唯一连续十三年蝉联"中国最具幸福感城市"桂冠的城市。全市下辖92个街道9... 详细信息

杭州市作为浙江省政治、经济、科教和文化中心,长三角南翼重要中心城市,迄今已获得联合国人居奖、国际花园城市、创建全国文明城市工作先进城市等荣誉称号,是全国唯一连续十三年蝉联"中国最具幸福感城市"桂冠的城市。全市下辖92个街道98个乡镇,1180个社区2013个村,常住人口为980.6万人,其中城镇人口759.0万人,农村人口为221.6万人,城镇化率达77.4%。

关键词：城镇人口民政局局长荣誉称号常住人口城镇化率长三角国际花园城市联合国人居奖

一种基于LEACH协议改进的簇间多跳路由协议

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传感技术学报 2014年第3期27卷 373-377页

作者：陈炳才么华卓杨明川李宝君赫凌超大连理工大学计算机科学与技术学院大连116024 哈尔滨工程大学信息与通信工程学院哈尔滨150001 哈尔滨工业大学电子与信息工程学院哈尔滨150006

为了均衡无线传感器网络的能量消耗,延长网络的生存时间,在研究几种基于均匀分簇和非均匀分簇的路由协议基础上,提出一种基于LEACH协议改进的簇间多跳路由协议。该协议引入能量因子和距离因子修正了LEACH协议的阈值函数。在簇间通信过程... 详细信息

为了均衡无线传感器网络的能量消耗,延长网络的生存时间,在研究几种基于均匀分簇和非均匀分簇的路由协议基础上,提出一种基于LEACH协议改进的簇间多跳路由协议。该协议引入能量因子和距离因子修正了LEACH协议的阈值函数。在簇间通信过程,簇头节点与Sink节点之间采用多跳通信方式,簇头与簇头之间形成一条通向Sink节点的优化路径。实验结果表明,相比于LEACH协议和EEUC协议,本文提出的新协议能够有效的均衡网络的能量消耗,延长无线传感器网络的寿命。

关键词：无线传感器网络 LEACH协议非均匀分簇多跳

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水化硅酸钙凝胶的研究进展

硅酸盐学报 2024年第5期52卷 1710-1721页

作者：赵丕琪孙乾杨新月芦令超程新济南大学材料科学与工程学院山东省建筑材料制备与测试技术重点实验室济南250022

水化硅酸钙(C-S-H)凝胶是影响水泥基胶凝材料宏观力学性能与长期耐久性的核心组分,阐明结构和性能间的关联关系有利于实现C-S-H凝胶的合成及推广应用。本文首先对C-S-H凝胶不同阶段的典型结构进行了综述,并引出结构与性能间的内在联系;... 详细信息

水化硅酸钙(C-S-H)凝胶是影响水泥基胶凝材料宏观力学性能与长期耐久性的核心组分,阐明结构和性能间的关联关系有利于实现C-S-H凝胶的合成及推广应用。本文首先对C-S-H凝胶不同阶段的典型结构进行了综述,并引出结构与性能间的内在联系;随后,介绍水热合成法对不同结构C-S-H凝胶的精确调控,并详细阐述了合成要素对其组成、形貌以及结构的影响规律;最后,综述了合成C-S-H凝胶在相关应用领域的基础研究。本文聚焦于C-S-H凝胶构效关系的梳理总结以及C-S-H凝胶工程应用的前景探索,可为充分完善水泥水化机理、开发高性能绿色化建材提供理论参考。

关键词：水化硅酸钙水热合成法绿色建材凝胶材料

产品功能视域下高校图书馆数据治理方案的调研与思考

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图书馆学研究 2024年第8期 27-38页

作者：宋灵超张立彬南开大学图书馆

数据时代图书馆蕴含着大量有价值的数据,科学治理并利用这些数据有助于推进图书馆智慧化转型。文章通过内容分析法分析5家数据治理公司提供的高校图书馆数据治理产品建设方案,梳理其治理对象、治理目标和治理功能,分析治理对象的范围边... 详细信息

数据时代图书馆蕴含着大量有价值的数据,科学治理并利用这些数据有助于推进图书馆智慧化转型。文章通过内容分析法分析5家数据治理公司提供的高校图书馆数据治理产品建设方案,梳理其治理对象、治理目标和治理功能,分析治理对象的范围边界、治理目标层级划分以及治理模式结构差异,总结调研产品存在的问题。根据分析结果从厘清治理范围的“界”、守住数据服务的“根”、规范数据治理的“治”、重视治理数据的“用”、探索治理评估的“法”、强调治理成果的“效”等角度对高校图书馆数据治理工作提出建议。

关键词：高校图书馆数据治理功能模式智慧化转型