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Single-Atom Lithiophilic Sites Confined within Ordered Porous Carbon for Ultrastable Lithium Metal Anodes

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Energy & Environmental Materials 2023年第3期6卷 366-372页

作者： Wenzhong Huang shanlin liu Ruohan Yu Liang Zhou Zhenhui liu Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Nanostructure Research Centre Wuhan University of TechnologyWuhan 430070China College of Material Science and Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu hydrogen ValleyFoshan 528200China

Attributing to the high specific capacity and low electrochemical reduction potential,lithium(Li)metal is regarded as the most promising anode for high-energy Li ***,the growth of lithium dendrites and huge volume change seriously limit the development of lithium metal *** overcome these challenges,an ordered mesoporous N-doped carbon with lithiophilic single atoms is proposed to induce uniform nucleation and deposition of Li *** from the synergistic effects of interconnected three-dimensional ordered mesoporous structures and abundant lithiophilic single-atom sites,regulated local current density and rapid mass transfer can be achieved,leading to the uniform Li deposition with inhibition of dendrites and buffered volume *** a result,the as-fabricated anode exhibits a high CE of 99.8%for 200 cycles.A stable voltage hysteresis of 14 mV at 5 mA cm^(−2)could be maintained for more than 1330 h in the symmetric ***,the full cell coupled with commercial LiFePO_(4)exhibits high reversible capacity of 108 mAh g^(−1)and average Coulombic efficiency of 99.8%from 5th to 350th cycles at 1 *** ordered mesoporous carbon host with abundant lithiophilic single-atom sites delivers new inspirations into rational design of high-performance Li metal anodes.

关键词： lithiophilic lithium metal battery ordered mesoporous carbon single atom

Autooxidation Mechanism of Pyrogallol and Its Free Radical Effects Studied by Means of ESR,UV and NMR

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Chemical Research in Chinese Universities 1999年第2期15卷 54-59页

作者： liu shanlin ZHAO Baolu SHI Dongyun XIN Wenjuan Department of Biochemistry Shanghai Medical UniversityShanghai200032 Institute of Biophysics Academia SinicaBeijing100101

Pyrogallol(pyrogallic acid)is easy to be autooxidized,forming a free radical under alkaline condition,but the mechanism has not been *** mechanism of the autooxidation of pyrogallol was studied with ESR,UV and NMR techniques and it was found that pyrogallol was autooxidized to a quinone radical under alkaline *** at the same time oxygen recieved an electron from the reaction to form superoxide anions,the hydroxyl free radical was then produced by HaberWeiss *** oxygen free radicals generated from this process promoted the autooxidation of pyrogallol.

关键词： Pyrogallol Free radical ESR NMR UV

基于二阶锥松弛和Big-M法的配电网分布式电源优化配置

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电网技术 2018年第8期42卷 2604-2611页

作者：刘健辰刘山林辽宁工程技术大学电气与控制工程学院

提出一种基于二阶锥松弛和Big-M法的配电网DG（distributed generation,DG）优化配置的有效方法。通过适当处理PQ、PV、PI和PQ（V）4种类型DG的并网潮流约束,精确计及DG的运行控制方式对优化配置的影响。利用二阶锥松弛方法,将交流潮流... 详细信息

提出一种基于二阶锥松弛和Big-M法的配电网DG（distributed generation,DG）优化配置的有效方法。通过适当处理PQ、PV、PI和PQ（V）4种类型DG的并网潮流约束,精确计及DG的运行控制方式对优化配置的影响。利用二阶锥松弛方法,将交流潮流约束、ZIP负荷约束和PI、PQ（V）型DG并网潮流约束转化为二阶锥规划问题,并通过适当设置优化目标函数,保证松弛误差趋于零。为了解决DG优化配置中的混合整数非线性约束、PV型节点无功功率越限和无功补偿整数约束问题,利用Big-M方法将其转化为便于有效求解的混合整数二阶锥规划问题。通过多个测试场景表明,所提出的二阶锥松弛方法具有非常高的求解精度,而且具备求解多类型DG多区域优化配置问题的能力。并且发现,适当调整DG的功率因数可以显著降低系统损耗;采用多DG分散配置比单DG集中配置的降损效果更好;增加电压偏移质量优化目标后,可以使电压分布更加扁平,显著提高系统电压质量。采用IEEE-33节点和PG＆E69节点配电系统的仿真结果验证了所提出方法的可行性和有效性。

关键词：分布式电源优化配置二阶锥松弛法 Big-M法配电网

DNA条形码参考数据集构建和序列分析相关的新兴技术

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生物多样性 2019年第5期27卷 526-533页

作者：刘山林中国农业大学植物保护学院食品营养与人类健康高精尖创新中心北京100193

近年来DNA条形码技术迅速发展,产生的条形码的数量及其应用范围都呈指数性增长,现已广泛用于物种鉴定、食性分析、生物多样性评估等方面。本文重点总结并讨论了构建条形码参考数据库和序列聚类相关的信息分析的技术和方法,包括:基于高... 详细信息

近年来DNA条形码技术迅速发展,产生的条形码的数量及其应用范围都呈指数性增长,现已广泛用于物种鉴定、食性分析、生物多样性评估等方面。本文重点总结并讨论了构建条形码参考数据库和序列聚类相关的信息分析的技术和方法,包括:基于高通量测序(high throughput sequencing, HTS)平台以高效并较低的成本获取条形码序列的方法;同时还介绍了从原始测序序列到分类操作单元(operational taxonomic units, OTUs)过程中的一些计算逻辑以及被广泛采用的软件和技术。这是一个较新并快速发展的领域,我们希望本文能为读者提供一个梗概,了解DNA条形码技术在生物多样性研究应用中的方法和手段。

关键词： DNA条形码可操作物种单元聚类宏基因条形码高通量测序

Defining honeybee subspecies in an evolutionary context warrants strategized conservation

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Zoological Research 2023年第3期44卷 483-493页

作者： Lifei Qiu Jiangxing Dong Xingan Li Sajad HParey Ken Tan Michael Orr Aquib Majeed Xue Zhang Shiqi Luo Xuguo Zhou Chaodong Zhu Ting Ji Qingsheng Niu shanlin liu Xin Zhou Department of Entomology College of Plant ProtectionChina Agricultural UniversityBeijing 100193China Key Laboratory for Bee Genetics and Breeding Jilin Provincial Institute of Apicultural SciencesJilinJilin 132108China Department of Zoology School of Biosciences and BiotechnologyBaba Ghulam Shah Badshah UniversityRajouri(Jammu and Kashmir)185234India CAS Key Laboratory of Tropical Forest Ecology Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesXishuangbannaYunnan 650000China Key Laboratory of Zoological Systematics and Evolution Institute of ZoologyChinese Academy of SciencesBeijing 100101China Department of Entomology University of KentuckyLexingtonKY 40546USA Yangzhou University YangzhouJiangsu 225009China

Despite the urgent need for conservation consideration,strategic action plans for the preservation of the Asian honeybee,Apis cerana Fabricius,1793,remain *** the convergent and divergent adaptations of this widespread insect have led to confusing phenotypical traits and inconsistent infraspecific *** subspecies boundaries pose a significant challenge to honeybee conservation efforts,as it is difficult to effectively prioritize conservation targets without a clear understanding of subspecies ***,we investigated genome variations in 362 worker bees representing almost all populations of mainland *** to understand how evolution has shaped its population ***-genome single nucleotide polymorphisms(SNPs)based on nuclear sequences revealed eight putative subspecies,with all seven peripheral subspecies exhibiting mutually exclusive monophyly and distinct genetic divergence from the widespread central *** results demonstrated that most classic morphological traits,including body size,were related to the climatic variables of the local habitats and did not reflect the true evolutionary history of the ***,such morphological traits were not suitable for subspecific ***,wing vein characters showed relative independence to the environment and supported the subspecies boundaries inferred from nuclear *** phylogeny further indicated that the present subspecies structure was a result of multiple waves of population divergence from a common *** on our findings,we propose that criteria for subspecies delineation should be based on evolutionary independence,trait distinction,and geographic *** formally defined and described eight subspecies of mainland *** of the evolutionary history and subspecies boundaries enables a customized conservation strategy for both widespread and endemic honeybee conservation units,guiding colony introduction and

关键词： Apis cerana Integrative taxonomy Species concept Pollinator insect Centrifugal diversification Morphology Genomics

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ST638彩电控制微处理器的特点及应用

电视技术 1999年第11期23卷 18-22页

作者：刘山林意法半导体(深圳)有限公司

从电视机软、硬件功能设计的角度，介绍了电视专用微处理器ＳＴ６３７８的特点，并给出了一个具有中英文选单式屏幕显示的彩电控制系统的应用实例。

关键词：彩色电视机微处理器屏幕显示 ST6378 应用

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线布载荷作用下碟形扁壳的非线性稳定

应用数学和力学 1998年第3期19卷 209-216页

作者：刘东陈山林重庆建筑大学

本文对轴对称线布载荷作用下碟形扁壳的非线性稳定问题进行了分析，得到了各种常见边界条件下碟形扁壳特征关系的二次近似表达式·讨论了几何参数β。

关键词：碟形扁壳非线性稳定仪表自控系统线布载荷

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旋转壳的一般轴对称问题及积分方程分析

应用数学和力学 1998年第6期19卷 471-479页

作者：陈山林刘东重庆建筑大学建筑安装工程系重庆建筑大学研究生部

本文得到了旋转弹性薄壳在一般荷载下轴对称问题的一种简化形式的复变量方程，该方程准确度在薄壳理论误差范围，并消除了经线极值奇点；给出了问题的Ｖｏｌｔｅｒａ积分方程表述及其数值解·

关键词：旋转壳轴对称积分方程薄壳理论

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固定指数加权模糊自适应EKF研究及其应用

弹箭与制导学报 2009年第2期29卷 238-241页

作者：刘山林蔡宗平第二炮兵工程学院西安710025

为了改善扩展卡尔曼滤波(EKF)算法在机动目标跟踪中的跟踪性能,文中研究了一种固定指数加权模糊自适应扩展卡尔曼滤波技术,通过监视理论残差和实际残差的协方差一致程度,应用模糊推理系统不断调整滤波协方差,对扩展卡尔曼滤波器(EKF)进... 详细信息

为了改善扩展卡尔曼滤波(EKF)算法在机动目标跟踪中的跟踪性能,文中研究了一种固定指数加权模糊自适应扩展卡尔曼滤波技术,通过监视理论残差和实际残差的协方差一致程度,应用模糊推理系统不断调整滤波协方差,对扩展卡尔曼滤波器(EKF)进行在线自适应控制,最终实现最优估计。仿真结果表明,改进的算法稳定性高,精度得到明显改善,用于弱机动目标跟踪效果较好。

关键词：扩展卡尔曼滤波固定指数加权自适应模糊推理系统机动目标跟踪