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Journal of Energy Chemistry 2018年第2期27卷 447-450页

作者： Yan Li Xinhai Li zhixing Wang Huajun Guo Jiexi Wang School of Metallurgy and Environment Central South University

In this study we report a series of nickel-rich layered cathodes LiNi1-2xCoxMnxO2（x = 0.075, 0.05,0.025） prepared from chlorides solution via ultrasonic spray pyrolysis. SEM images illustrate that the samples are submicron-sized particles and the particle sizes increase with the increase of Ni content.LiNi0.85Co0.075Mn0.075O2 delivers a discharge capacity of 174.9 mAh g-1 with holding 93% reversible capacity at 1 C after 80 cycles, and can maintain a discharge capacity of 175.3 mAh g-1 at 5 C rate. With increasing Ni content, the initial specific capacity increases while the cycling and rate performance degrades in some extent. These satisfying results demonstrate that spray pyrolysis is a powerful and efficient synthesis technology for producing Ni-rich layered cathode（Ni content 〉 80%）.

关键词： Lithium-ion batteries Nickel-rich layered cathode Ultrasonic spray pyrolysis Powder technology Composite materials

基于NB-IoT的水雨情实时监测系统与设计

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电子测量技术 2020年第2期43卷 133-138页

作者：陈敏胡春杰阮聪陈翠牛智星水利部南京水利水文自动化研究所南京210012 水利部水文仪器及岩土工程仪器质量监督检验测试中心南京210012 江苏南水科技有限公司南京210012

为了解决传统水雨情监测采用GPRS通信方式存在的耗电大、费用高等问题,根据水雨情遥测实时监测要求,设计了一种基于NB-IoT的水雨情实时监测系统与设计。通过雨量传感器、流速仪、水位传感器等多种传感器采集数据,通过电信云平台将水雨... 详细信息

为了解决传统水雨情监测采用GPRS通信方式存在的耗电大、费用高等问题,根据水雨情遥测实时监测要求,设计了一种基于NB-IoT的水雨情实时监测系统与设计。通过雨量传感器、流速仪、水位传感器等多种传感器采集数据,通过电信云平台将水雨情数据以规定的格式通过BC28通信模块上传至监控中心的Java Web平台,实现监测数据的远程传输、显示、查询以及网络共享,该系统在一定程度上提高了监测水雨情的工作效率,具有良好的推广价值和经济效益。

关键词：水情遥测 NB-IoT 工作效率 Web

Electrospinning-Enabled Si/C Nanofibers with Dual Modification as Anode Materials for High-Performance Lithium-Ion Batteries

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Acta Metallurgica Sinica(English Letters) 2021年第3期34卷 329-336页

作者： Yi Yan Huajun Guo zhixing Wang Xinhai Li Guochun Yan Jiexi Wang School of Metallurgy and Environment Central South UniversityChangsha 410083China Engineering Research Center of the Ministry of Education for Advanced Battery Materials Central South UniversityChangsha 410083China

In this work,silicon@reduced graphene oxide/pyrolytic carbon nanofibers(Si@RGO/C NFs)composite with double modified layer is prepared through electrospinning,stabilization and carbonization.In this composite,polyethylene oxide-polypropylene oxide-polyethylene oxide(P123,a non-ionic surfactant)is introduced as the dispersant,which can make silicon nanoparticles evenly dispersed in electrospinning solution to prevent it from agglomeration.Graphene modified layer can buffer the volumetric expansion of silicon nanoparticles,prevent direct contact between silicon and electrolyte as well as enhance the electrical conductivity.Moreover,carbon fibers synthesized by electrospinning can encapsulate silicon@graphene composite internally to form a double modified layer.This composite with double modified layer can further alleviate the volume change of silicon nanoparticles and avoid direct contact between silicon and electrolyte to form a stable interface.Owing to the above-mentioned merits,the Si@RGO/C NFs composite exhibits excellent cyclic stability and superior rate performance.Particularly,it maintains a specific capacity of 929 mA h g^(-1)with the retention ratio of 83.1%after 100 cycles at 0.5 A g^(-1)and delivers an outstanding rate capability of 1003 mA h g^(-1)at 2 A g^(-1).

关键词： Lithium-ion batteries Silicon/carbon composite Surface modification Graphene Electrospinning

“互联网+”时代电力企业集团电商物流发展研究

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物流技术 2018年第1期37卷 42-45页

作者：黄智星吴艳华陈雪红牛蒙中国电能成套设备有限公司北京100011 中国铁道科学研究院电子计算技术研究所北京100081

随着"互联网+"时代的到来,电力企业集团传统的发展模式越来越不能满足市场的需求,电子商务日益受到电力企业集团的重视。电力企业集团在大力发展电子商务的同时,却对能极大影响电子商务效率和成本的电商物流不甚重视。首先针对电力企业... 详细信息

随着"互联网+"时代的到来,电力企业集团传统的发展模式越来越不能满足市场的需求,电子商务日益受到电力企业集团的重视。电力企业集团在大力发展电子商务的同时,却对能极大影响电子商务效率和成本的电商物流不甚重视。首先针对电力企业集团电子商务的发展现状,分析了电力企业集团发展电商物流的必要性,然后从五个方面提出了电力企业集团电商物流的发展建议。

关键词：互联网+ 电商物流电力企业集团

A Disintegrin and Metalloprotease 10 in neuronal maturation and gliogenesis during cortex development

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Neural Regeneration Research 2013年第1期8卷 24-30页

作者： zhixing Ma Qingyu Li Zhengyu Zhang Yufang Zheng School of Life Sciences Fudan University

The multiple-layer structure of the cerebral cortex is important for its functions. Such a structure is generated based on the proliferation and differentiation of neural stem/progenitor cells. Notch functions as a molecular switch for neural stem/progenitor cell fate during cortex development but the mechanism remains unclear. Biochemical and cellular studies showed that Notch receptor activation induces several proteases to release the Notch intracellular domain （NICD）. A Disintegrin and Metalloprotease 10 （ADAM10） might be a physiological rate-limiting $2 enzyme for Notch activation. Nestin-driven conditional ADAM10 knockout in mouse cortex showed that ADAM10 is cdtical for maintenance of the neural stem cell population during early embryonic cortex development. However, the expression pattern and function of ADAM10 during later cerebral cortex development remains poorly understood. We performed in situ hybridization for ADAMIO mRNA and immunofluorescent analysis to determine the expression of ADAM10 and NICD in mouse cortex from embryonic day 9 （E14.5） to postnatal day 1 （P1）. ADAM10 and NICD were highly co-localized in the cortex of E16.5 to P1 mice. Comparisons of expression patterns of ADAM10 with Nestin （neural stem cell marker）, Tujl （mature neuron marker）, and S100β （gila marker） showed that ADAM10 expression highly matched that of S10013 and partially matched that of Tujl at later embryonic to early postnatal cortex developmental stages. Such expression patterns indicated that ADAM10-Notch signaling might have a critical function in neuronal maturation and gliogenesis during cortex development.

关键词： neural regeneration neurogenesis ADAM10 A Disintegrin and Metalloprotease Notch Notchintracellular domain TujlS100 Nestin cerebral cortex development neuronal maturation glialcell grants-supported paper photographs-containing paper neuroregeneration

Efficacy of an Yinyanghuo(Herba Epimedii Brevicornus)-Xianmao(Rhizoma Curculiginis)drug pair in a rat model of polycystic ovary syndrome

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Journal of Traditional Chinese Medicine 2021年第4期41卷 588-599页

作者： LIU Chang LIU Lihong LI Nan XIU Aihui ZHANG zhixing AI Hao Department of Gynecological Ward The Third Affiliated HospitalJinzhou Medical UniversityJinzhou 121000China Liaoning Provincial Key Laboratory of Follicle Development and Reproductive Health(Office of Science and Technology) Jinzhou 121000China Department of Gynecological Ward The First Affiliated HospitalJinzhou Medical UniversityJinzhou 121000China Department of Pathology College of Basic Medical ScienceJinzhou Medical UniversityJinzhou 121000China

OBJECTIVE:To identify active compounds in an Yinyanghuo(Herba Epimedii Brevicornus)-Xianmao(Rhizoma Curculiginis)drug pair(ECD)and investigate its efficacy on polycystic ovary syndrome(PCOS),and its possible mechanism in a rat model of PCOS.METHODS:A network pharmacology approach involving a characteristic drug assessment,active compound and target prediction,PCOS gene collection as well as network analysis was employed.The ovary morphology after treatment was observed using an animal model and western blotting and real-time PCR were used to verify AKT1 as the molecular target.RESULTS:Six networks were constructed,an active compound-target network for the ECD(C-T network),a drug-target network(D-T network),a related genes network,a targets interaction network,a key genes interaction network,and a gene-pathway network.A total of 41 compounds and 261 targets were identified for the ECD,232 PCOS-related genes,31 cogenes,and 14 pathways.These pathways may be involved in the efficacy of ECD on PCOS.The proteins most involved in the signal pathways for all targets were AKT1,IL6,INSR,ESR,and GSK3B.The AKT1 target was selected for experimental verification.Based on the Western blot and real-time PCR results,the expression of AKT1 in the PCOS model varied after treatment with ECD.CONCLUSIONS:Our findings suggest that the ECD can reverse the negative morphological changes in ovarian tissue that occur in model rats of PCOS.AKT1 may be a key mediator of the observed ability of the ECD to protect against PCOS in the model rats.

关键词： polycystic ovary syndrome Pharmacology Yinyanghuo(Herba Epimedii Brevicornus)Xianmao(Rhizoma Curculiginis)drug pair

Analysis on the turning point of dynamic in-plane compressive strength for a plain weave composite

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Defence Technology（防务技术） 2024年第2期32卷 485-495页

作者： Xiaoyu Wang zhixing Li Licheng Guo Zhenxin Wang Jiuzhou Zhao Department of Astronautic Science and Mechanics Harbin Institute of TechnologyHarbin150001China AECC Commercial Aircraft Engine Co LTDShanghai201108China

Experimental investigations on dynamic in-plane compressive behavior of a plain weave composite were performed using the split Hopkinson pressure bar. A quantitative criterion for calculating the constant strain rate of composites was established. Then the upper limit of strain rate, restricted by stress equilibrium and constant loading rate, was rationally estimated and confirmed by tests. Within the achievable range of 0.001/s-895/s, it was found that the strength increased first and subsequently decreased as the strain rate increased. This feature was also reflected by the turning point(579/s) of the bilinear model for strength prediction. The transition in failure mechanism, from local opening damage to completely splitting destruction, was mainly responsible for such strain rate effects. And three major failure modes were summarized under microscopic observations: fiber fracture, inter-fiber fracture, and interface delamination. Finally, by introducing a nonlinear damage variable, a simplified ZWT model was developed to characterize the dynamic mechanical response. Excellent agreement was shown between the experimental and simulated results.

关键词： Plain weave composite Dynamic strength Quantitative criterion Turning point Failure mechanism

宏基因组测序技术在颌面部间隙感染细菌分布中的研究

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华西口腔医学杂志 2021年第4期39卷 475-481页

作者：陈怡恒郑宏雨李紫璇吴永超牛志兴彭彦惠赵军方孙强郑州大学第一附属医院口腔颌面外科郑州450052

目的对比分析宏基因组测序(mNGS)与常规细菌培养在检测颌面部间隙感染致病微生物方面的差异与一致性,为临床早期明确颌面部间隙感染致病菌提供新的检测方法。方法收集2020年3—6月就诊于郑州大学第一附属医院的16例口腔颌面部间隙感染... 详细信息

目的对比分析宏基因组测序(mNGS)与常规细菌培养在检测颌面部间隙感染致病微生物方面的差异与一致性,为临床早期明确颌面部间隙感染致病菌提供新的检测方法。方法收集2020年3—6月就诊于郑州大学第一附属医院的16例口腔颌面部间隙感染患者的临床资料,分别使用mNGS及常规细菌培养方法对脓液进行检测,对两种方法的检验结果进行分析比较,包括检验周期、阳性检出率、厌氧菌、兼性厌氧菌及需氧菌检出率、病原菌分布、相对物种丰度、耐药基因。结果mNGS平均检验周期为(18.81±3.73)h,细菌培养的平均检验周期为(83.25±11.64)h,前者短于后者(P0.05)。在mNGS检测出的15种致病菌中,3种为革兰阳性菌,12种为革兰阴性菌;49种非致病菌中,16种为革兰阳性菌,32种为革兰阴性菌,1种为真菌。结论与常规细菌培养相比,mNGS具有检验时间短、灵敏度高、准确率高的特点,为临床上早期明确颌面间隙感染致病菌提供新的检测方法,并有利于该疾病的早期临床诊断与治疗。

关键词：宏基因组测序颌面间隙感染病原微生物下一代测序技术

空间规划传导机制中的“刚”与“柔”——以上海崇明区为例

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城市规划 2021年第5期45卷 68-75页

作者：胡智行江苏省城市规划设计研究院

随着我国城市规划管理机构改革和空间规划体系的重构,2020年成为国土空间规划编制的重要年份。上海市通过规划和国土职能部门的合并率先在全国实现了多规融合,在规划理念、规划方法和传导体系中均取得了的创新和成效,对全国其他城市空... 详细信息

随着我国城市规划管理机构改革和空间规划体系的重构,2020年成为国土空间规划编制的重要年份。上海市通过规划和国土职能部门的合并率先在全国实现了多规融合,在规划理念、规划方法和传导体系中均取得了的创新和成效,对全国其他城市空间规划体系构建具有指导意义。本文通过梳理日本、德国、荷兰的空间规划体系,明确其各个层次的规划内容和传导方式,剖析国外规划体系中地方政府和中央政府之间发展与管理的关系。再从总体规划、单元规划、详细规划3个层次系统总结了上海空间规划体系构建的主要内容,以崇明区3个层次的规划实践为例,从战略意图传导、刚性指标传导、柔性管控传导3个方面剖析上海空间规划自上而下、从规划到实施的传导全过程,为构建我国空间规划体系提供借鉴。

关键词：空间规划规划体系传导方式

基于非线性补偿的轨道交通列车自定位方法研究

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机车电传动 2023年第2期 131-135页

作者：韩芝星山西职业技术学院电气自动化工程系山西太原030006

列车精准定位对列车运营安全有着十分重要的意义。在某些国外地铁项目中,受限于技术体系的成熟度和设计成本,常规的GPS定位和CBTC定位技术无法满足项目对列车定位的需要,文章为此提出一种基于非线性补偿的轨道交通列车自定位方法。该方... 详细信息

列车精准定位对列车运营安全有着十分重要的意义。在某些国外地铁项目中,受限于技术体系的成熟度和设计成本,常规的GPS定位和CBTC定位技术无法满足项目对列车定位的需要,文章为此提出一种基于非线性补偿的轨道交通列车自定位方法。该方法能够在不增加新设备(如GPS、CBTC等)的情况下,仅依赖于车载既有设备实现列车位置的精确定位。所提出的方法系统组成简单、成本低、精度高、可靠性高(不受环境影响),具备推广意义。具体思路为:首先利用神经网络建立列车瞬时速度的补偿模型,通过补偿模型提升列车瞬时速度的精度;然后根据补偿后的列车实时运行速度与列车运行时间作积分累积得到列车实时的运行距离,再根据列车的固定运营线路图,计算得到列车距下一站的距离,实现定位。试验证明,补偿后的定位精度小于0.2 m,较补偿前提高了3~4倍。

关键词：轨道交通列车定位神经网络非线性补偿