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Nano Research 2018年第12期11卷 6294-6303页

作者： Ying Han Jie Zhou Tieqiang Li Zheng Yi ning lin Yitai Qian Hefei National Laboratory for Physical Science at Microscale and Department of Chemistry University of Science and Technology of ChinaHefei 230026China

Two-dimensional (2D) materials have attracted enormous attention due to their functional applications in energy storage. In this work, a low-temperature molten-salt chemical exfoliation methodology is developed for producing free-standing 2D mesoporous Si through deintercalation of CaSi2 in excess molten AlCl3 at 195 °C. The average dimension of these sheets is 1.5 μm, and the thickness of a single sheet is approximately 10 nm. The as-prepared 2D Si has a Brunauer–Emmett–Teller surface area of 154 m2·g−1 and an average pore size of 5.87 nm. With this unique structure, the 2D Si exhibits superior Li-storage performance, including a reversible capacity of 2,974 mA·h·g−1 at 0.2 C, reversible capacities of 2,162, 1,947, and 1,527 mA·h·g−1 at 0.8, 2, and 5 C after 200 cycles, and a capacity retention of 357 mA·h·g−1 even at 30 C (90 A·g−1).

关键词： Si nanosheets molten-salt exfoliation mesoporous structure Li-storage anode superior rate capability

Meso-porous amorphous Ge:Synthesis and mechanism of an anode material for Na and K storage

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Nano Research 2019年第8期12卷 1824-1830页

作者： Zheng Yi ning lin Tieqiang Li Ying Han Yang Li Yitai Qian Department of Applied Chemistry University of Science and Technology of ChinaHefei 230026China

Crystalline Ge is a highly active anode material for Li storage but inactive for Na storage because of high diffusion barrier. By in-situ Raman spectrum, we explore that the Na could reversibly ailoy/dealloy with the amorphous Ge, but does not with the crystalline Ge. Herein, the amorphous Ge is fabricated by an acid-etching Zintl phase Mg2Ge route at room temperature, which shows a mesoporous architecture with a Brunauer-Emmett-Teller (BET) surface area of 29.9 m^2·g^-1 and a Barrett-Joyner-Halenda (BJH) average pore diameter of 7.6 nm. This mesoporous architecture would enhance the Na-ion/electron diffusion rate and buffer the volume expansion. As a result, the as-prepared amorphous Ge shows superior Na-ion storage performance including high reversible capacity over 550 mA·h·g^-1 at 0.2 C after 50 cycles, good rate capability with a capacity of 273 mA·h·g^-1 maintained at 5.0 C, and long-term cycling stability with capacities of 450 mA·h·g^-1 at 0.4 C after 200 cycles. For the K-ion storage, the amorphous Ge is also more active than the crystalline counter and maintains a capacity of 210 mA·h·g^-1 after 100 cycles at 0.2 C.

关键词： amorphous Ge sodium-ion batteries K storage in-situ Raman spectrum

Flocking Effects of the Stochastic Cucker-Smale System with Noise

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Journal of Systems Science & Complexity 2024年第5期37卷 1978-1994页

作者： HAN ning GE Bin LI lin School of Mathematical Sciences Harbin Engineering University

In this paper, the flocking behavior of a Cucker-Smale model with a leader and noise is studied in a finite time. The authors present a Cucker-Smale system with two nonlinear controls for a complex network with stochastic synchronization in probability. Based on the finite-time stability theory of stochastic differential equations, the sufficient conditions for the flocking of stochastic systems in a finite time are obtained by using the Lyapunov function method. Finally, the numerical simulation of the particle system is carried out for the leader and noise, and the correctness of the results is verified.

关键词： Cucker-Smale model flocking behavior leader noise

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多特征融合的焊缝图像多标签分类算法

华侨大学学报（自然科学版） 2024年第4期45卷 514-523页

作者：牛顿林宁林振超黄凯王合佳郑力新华侨大学工学院福建泉州362021 福建省特种设备检验研究院福建泉州362021

为了实现焊缝缺陷的准确分类,提出一种多特征融合的焊缝图像多标签分类算法。首先,通过残差神经网络(ResNet-50)提取图像的特征信息,根据得到的特征图构建图结构,提出关联度引导邻域传播(RDGNP)算法优化图结构;然后,使用图卷积神经网络(... 详细信息

为了实现焊缝缺陷的准确分类,提出一种多特征融合的焊缝图像多标签分类算法。首先,通过残差神经网络(ResNet-50)提取图像的特征信息,根据得到的特征图构建图结构,提出关联度引导邻域传播(RDGNP)算法优化图结构;然后,使用图卷积神经网络(GCN)提取图结构的特征信息,并设计特征融合模块实现图像特征和图结构特征的结合;最后,得到多标签分类结果。实验结果表明:文中算法能够有效地实现焊缝缺陷的多标签分类,在X射线焊缝缺陷数据集上的性能有明显提升。

关键词：多标签分类全局相关性图像特征图结构特征特征融合

应用改良版病人主观综合评估量表诊断肺癌病人营养不良的前瞻性研究

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肠外与肠内营养 2024年第1期31卷 1-5页

作者：石培洁肖春秀康超时皎皎周菁李东林宁西南交通大学医学院四川成都610031 西南交通大学附属医院/西部战区总医院营养科四川成都610000 西南交通大学附属医院/西部战区总医院呼吸与危重症医学科四川成都610000 西南交通大学附属医院/西部战区总医院肿瘤科四川成都610000

目的:本研究旨在探讨m PG-SGA与PG-SGA、GLIM工具、传统实验室指标(总蛋白、白蛋白、前白蛋白、C反应蛋白、中性粒细胞/淋巴细胞)在评价新入院肺癌病人营养不良的相关性。方法:选取四川省成都市中国人民解放军西部战区总医院肿瘤科和呼... 详细信息

目的:本研究旨在探讨m PG-SGA与PG-SGA、GLIM工具、传统实验室指标(总蛋白、白蛋白、前白蛋白、C反应蛋白、中性粒细胞/淋巴细胞)在评价新入院肺癌病人营养不良的相关性。方法:选取四川省成都市中国人民解放军西部战区总医院肿瘤科和呼吸与危重症医学科住院≥48 h的肺癌病人作为研究对象,对选取的肺癌病人进行血液学检验,并使用m PG-SGA、PG-SGA和GLIM工具进行营养不良的评估和诊断。比较mPG-SGA的评价结果与传统单项营养指标的相关性。结果:入组的199例肺癌病人的平均年龄为(62.69±8.79)岁,其中男性153例(76.88%)。mPG-SGA、PG-SGA和GLIM评价/诊断营养不良的发生率分别为93.97%、94.97%、和79.40%。以PGSGA为金标准参照,m PG-SGA和GLIM检测营养不良的灵敏度分别为100.00%和80.42%,特异度分别为83.33%和40.00%,AUC值分别为0.995和0.602。结论:mPG-SGA在对肺癌病人营养不良发生率的评价方面与PG-SGA和GLIM提供了几乎相同的能力,其评价内容更为简单,或可能成为肺癌病人快速营养评估的替代方法,需要进一步在不同肿瘤病人中进行验证。

关键词：肺癌 mPG-SGA PG-SGA GLIM 营养不良

Fabrication of Porous Nanocrystalline NiCo_2O_4 Electrode for Water Electrolysis

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稀有金属材料与工程 2006年第A3期35卷 646-647页

作者： Jun Yang Xiaozhan Yang Jianbao Li Hong lin ning Wang Chunfu lin Gangfeng Guo State Key Lab of New Ceramics ＆ Fine Processing Department of Materials Science ＆ Engineering Tsinghua University Beijing 100084 China

A porous nanocrystalline NiCo_2O_4 compound electrode was *** morphology of the electrode was controlled by altering the concentration of precipitant (NaOH solution).The electrode was consisted of metal substrate (Ni) and porous nanocrystalline NiCo_2O_4 film which was stacked by homosized and pretty regular hexagonal nanoparticles,with thinner than 50 nm and about 200 nm in *** electrode exhibits good electrochemical properties compared with Ni electrode.

关键词： electrophoretic deposition nanocrystalline NiCo2O4 porous water electrolysis

Facile Synthesis of Long,Straight and Uniform Copper Nanowires via a Solvothermal Method

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稀有金属材料与工程 2006年第A3期35卷 644-645页

作者： Chunfu lin Hong lin ning Wang Xing Zhang Jun Yang Jianbo Li Xiaozhan Yang State Key Lab of New Ceramics ＆ Fine Processing Department of Materials Science ＆ Engineering Tsinghua University Beijing 100084 China

Copper nanowires were facilely prepared via a solvothermal *** this method,cetyitrimethylammonium bromide (CTAB) was used as a soft template,copper nitrate was an inorganic precursor,and absolute ethanol served as a reducing agent as well as a solvent.X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used to characterize the as-prepared copper *** as-prepared copper nanowires are fairly uniform and *** majority of them are longer than 100μm and some even longer than 200μ***,most nanowires are quite *** addition, The mechanism of the growth process of copper nanowires was discussed.

关键词： copper nanowires solvothermal method template

Revealing the interface-rectifying functions of a Li-cyanonaphthalene prelithiation system for SiO electrode

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Science Bulletin 2022年第6期67卷 636-645,M0004页

作者： Yang Li Yong Qian Ya Zhao ning lin Yitai Qian Department of Applied Chemistry University of Science and Technology of ChinaHefei 230026China ningbo Veken New Energy Technology Co. LtdNingbo 315800China

Chemical prelithiation is regarded as a crucial method for improving the initial Coulombic efficiency(ICE)of Li-storage ***,a substituent-engineered Li-cyanonaphthalene chemical prelithiation system is designed to simultaneously enhance the ICE and construct a multifunctional interfacial film for SiO electrodes.X-ray photoelectron spectroscopy(XPS),electron energy-loss spectroscopy(EELS),nuclear magnetic resonance(NMR)spectroscopy and atomic force microscopy(AFM)prove that the Licyanonaphthalene prelithiation reagent facilitates the formation of a rectified solid electrolyte interface(SEI)film in two ways:(1)generation of a gradient SEI film with an organic outer layer(dense Ncontaining organics,ROCO_(2)Li)and an inorganic LiF-enriched inner layer;(2)homogenization of the horizontal distribution of the composition,mechanical properties and surface *** a result,the prelithiated SiO electrode exhibits an ICE above 100%,enhanced CEs during cycling,better cycle stability and inhibition of lithium dendrite formation in the overcharged ***,the prelithiated hard carbon/SiO(9:1)‖LHCoO_(2) cell displays an enhancement in the energy density of 62.3%.

关键词： Chemical prelithiation Substituent-engineered Multifunctional interfacial film Horizontal distribution Cycle stability

VNet: a versatile network to train real-time semantic segmentation models on a single GPU

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Science China(Information Sciences) 2022年第3期65卷 272-273页

作者： Wenxing LI ning lin Mingzhe ZHANG Hang LU Xiaoming CHEN Xiaowei LI College of Computer Science and Technology Guizhou University State Key Laboratory of Computer Architecture Institute of Computing Technology Chinese Academy of Sciences University of Chinese Academy of Sciences

Dear editor,Modern semantic segmentation, which has important applications such as medical image analysis, image editing, and video surveillance, has made remarkable progress using deep convolution neural network models. Recently, an efficient real-time semantic segmentation method has received considerable attention, as intelligent edge devices not only have faster inference speed requirements for semantic segmentation models but also cannot rely on the cloud services of data centers. There are two feasible approaches to develop an efficient semantic segmentation model.

关键词： Efficiency Machine learning Real-time systems Segmentation Light-weight

2D interspace confined growth of ultrathin MoS_(2)-intercalated graphite hetero-layers for high-rate Li/K storage

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Nano Research 2021年第4期14卷 1061-1068页

作者： Yang Li Song Jiang Yong Qian Xuedong Yan Jie Zhou Zheng Yi ning lin Yitai Qian Department of Applied Chemistry University of Science and Technology ofChinciy Hefei 230026China Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of ChinaHefei 230026China College of Chemical Engineering Ningbo PolytechnicNingbo 315800China ningbo Veken Battery Co.Ltd Ningbo 315800China

Herein,a two-dimensional(2D)interspace-confined synthetic strategy is developed for producing MoS_(2)intercalated graphite(G-MoS_(2))hetero-layers composite through sulfuring the pre-synthesized stage-1 MoCI5-graphite intercalation compound(M0 CI5-GIC).The in situ grown MoS_(2)nanosheets(3-7 layers)are evenly encapsulated in graphite layers with intimate interface thus forming layer-by-layer MoS_(2)-intercalated graphite *** this structure,the unique merits of MoS_(2)and graphite components are integrated,such as high capacity contribution of MoS_(2)and the flexibility of graphite ***,the tight interfacial interaction between hetero-layers optimizes the potential of conductive graphite layers as matrix for MoS_(2).As a result,the G-MoS_(2)exhibits a high reversible Li+storage of 344 mAh·g^(-1)even at 10 A·g^(-1)and a capacity of 539.9 mAh·g^(-1)after 1,500 cycles at 5 A·g^(-1).As for potassium ion battery,G-MoS_(2)delivers a reversible capacity of 377.0 mAh·g^(-1)at 0.1 A·g^(-1)and 141.2 mAh·g^(-1)even at 2 A·g^(-1).Detailed experiments and density functional theory calculation demonstrate the existence of hetero-layers enhances the diffusion rates of Li^(+)and K^(+).This graphite interspace-confined synthetic methodology would provide new ideas for preparing function-integrated materials in energy storage and conversion,catalysis or other fields.

关键词： interspace-confined MoS_(2)-intercalated graphite hetero-layers Li^(+)storage potassium ion battery