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Perspective on low-temperature electrolytes for LiFePO 4-based lithium-ion batteries

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International Journal of Minerals,Metallurgy and Materials 2023年第1期30卷 1-13页

作者： xianglong chen Yudong Gong Xiu Li Feng Zhan Xinhua Liu Jianmin Ma School of Resources Environment and MaterialsGuangxi UniversityNanning 530004China Peking University Science Park Beijing 100871China School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731China School of Transportation Science and Engineering Beihang UniversityBeijing 100871China

The olivine-type lithium iron phosphate(LiFePO_(4))cathode material is promising and widely used as a high-performance lithium-ion battery cathode material in commercial batteries due to its low cost,environmental friendliness,and high *** present,LiFePO_(4)/C sec-ondary batteries are widely used for electronic products,automotive power batteries,and other occasion-related applications with good thermal stability,stable cycle performance,and low room-temperature self-discharge ***,LiFePO_(4)-based battery applications are seriously limited when they are operated in a cold *** outcome is due to a considerable decrease in Li+transport capabilities within the elec-trode,particularly leading to a dramatic decrease in the electrochemical capacity and power performance of the ***,the design of low-temperature electrolytes is important for the further commercial application of LiFePO_(4) *** paper reviews the key factors for the poor low-temperature performance of LiFePO_(4)-based batteries and the research progress of low-temperature ***-cial attention is paid to electrolyte components,including lithium salts,cosolvents,additives,and the development of new *** factors affecting the anode are also ***,according to the current research progress,some viewpoints are summarized to provide suitable modification methods and research suggestions for improving the practicability of LiFePO_(4)/C commercial batteries at low temperat-ures in the future.

关键词： lithium-ion batteries LiFePO_(4) electrolytes low-temperature electrochemical performance

小麦ERF亚族转录因子参与逆境胁迫的研究进展

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山东农业科学 2024年第2期56卷 176-180页

作者：崔德周王丽丽陈祥龙李永波黄琛隋新霞楚秀生樊庆琦山东省农业科学院作物研究所/小麦玉米国家工程研究中心/农业农村部黄淮北部小麦生物学与遗传育种重点实验室/山东省小麦技术创新中心/济南市小麦遗传改良重点实验室山东济南250100 山东省林草种质资源中心山东济南250102 山东鲁研农业良种有限公司山东济南250100

小麦是中国三大粮食作物之一,其生长发育过程中会受到多种逆境胁迫的影响。AP2/EREBP是植物特有的一个庞大的转录因子超家族,普遍参与生长发育和逆境胁迫应答等生物学进程。ERF类转录因子是AP2/EREBP转录因子超家族的一个亚族。本研究... 详细信息

小麦是中国三大粮食作物之一,其生长发育过程中会受到多种逆境胁迫的影响。AP2/EREBP是植物特有的一个庞大的转录因子超家族,普遍参与生长发育和逆境胁迫应答等生物学进程。ERF类转录因子是AP2/EREBP转录因子超家族的一个亚族。本研究结合国内外相关研究进展,简要综述了小麦ERF亚族转录因子的结构特征与分布,重点阐述近年来小麦ERF亚族转录因子响应高盐、干旱、低温、重金属、病原菌侵染等逆境胁迫的功能和机制研究进展,最后展望了ERF亚族转录因子的研究方向和应用前景。

关键词：小麦 ERF亚族转录因子胁迫响应研究进展

利用Transformer的组合聚类算法在蛋白质数据分析中的应用

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无线互联科技 2024年第14期21卷 74-81页

作者：陈祥龙李海军赵福军袁媛三亚学院信息与智能工程学院三亚学院陈国良院士团队创新中心

该研究将Transformer模型适配于蛋白质特征降维场景，通过其特有的自注意力机制，赋予模型对长程依赖关系的较好建模性能，同时，多头注意力设计使得模型能够从不同角度捕获特征间的相互作用，进一步提升降维结果的表达力和鲁棒性。文... 详细信息

该研究将Transformer模型适配于蛋白质特征降维场景，通过其特有的自注意力机制，赋予模型对长程依赖关系的较好建模性能，同时，多头注意力设计使得模型能够从不同角度捕获特征间的相互作用，进一步提升降维结果的表达力和鲁棒性。文章提出了一种新型的GRKM组合聚类算法，在原始K-means算法中引入了灰狼优化算法(Grey Wolf Optimization Algorithm)确定聚类的K值，以随机游走算法(Random Walk)确定初始聚类中心，以马氏距离(Markov Distance)来衡量样本间的相似性。研究中，对5种具有代表性的蛋白质数据集进行了实验验证，得到了改进后算法在轮廓系数以及DB指数等方面相较于改进前都有较大提升的结论。最终的结果分析选取APP蛋白质数据，将蛋白质聚为8类，探讨了各类别的生物功能，在解释性方面也取得了较为明显的效果。所提算法为深入理解蛋白质功能、发现潜在生物标志物以及指导药物设计等实际应用提供了参考工具。

关键词：蛋白质序列 Transformer模型聚类算法马氏距离随机游走灰狼优化算法

Network Embedding Algorithm for Vulnerability Assessment of Power Transmission Lines Using Integrated Structure and Attribute Information

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CSEE Journal of Power and Energy Systems 2024年第1期10卷 351-360页

作者： xianglong Lian Tong Qian Zepeng Li Xingyu chen Wenhu Tang Q.H.Wu School of Electric Power Engineering South China University of TechnologyGuangzhou 510640China

In power systems,failures of vulnerable lines can trigger large-scale cascading failures,and vulnerability assessment is dedicated to locating these lines and reducing the risks of such *** on a structure and attribute network embedding(SANE)algorithm,a novel quantitative vulnerability analysis method is proposed to identify vulnerable lines in this ***,a two-layered random walk network with topological and electrical properties of transmission lines is ***,based on the weighted degree of nodes in the two-layered network,the inter-layer and intra-layer walking transition probabilities are developed to obtain walk ***,a Word2Vec algorithm is applied to obtain lowdimension vectors representing transmission lines,according to obtained walk sequences for calculating the vulnerability index of transmissions ***,the proposed method is compared with three widely used methods in two test *** show the network embedding based method is superior to those comparison methods and can provide guidance for identifying vulnerable lines.

关键词： Network embedding random walk transmission lines vulnerability assessment

The subsistence patterns of the Shengedaliang site(-4,000 yr BP)revealed by stable carbon and nitrogen isotopes in northern Shaanxi,China

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Science China Earth Sciences 2017年第2期60卷 268-276页

作者： chen xianglong GUO XiaoNing WANG WeiLin HU SongMei YANG MiaoMiao WU Yan HU YaoWu Institute of Archaeology Chinese Academy of Social SciencesBeijing 100710China Shaanxi Provincial Academy of Archaeology Xi'an 710054China Key Laboratory of Vertebrate Evolution and Human Origins Institute of Vertebrate Paleontology and PaleoanthropologyChinese Academy of SciencesBeijing 100044China University of Chinese Academy of Sciences Beijing 100049China

In order to explore subsistence patterns in northern Shaanxi Province around 4,000 yr BP,28 human and 24 animal bones from the Shengedaliang site were sampled for stable carbon and nitrogen isotope ratio *** results show that most people primarily subsisted on C_4 resources,*** and millet-related animal products,despite the fact that there was some intake of C_3 plants by some *** nitrogen isotope values indicate that there were differences in meat consumption between individuals at the *** were mainly foddered with millet and millet byproducts,as well as some cattle,according to their highδ^(13)C ***,most cattle and the sheep/goats consumed wild C_3 plants at *** above findings indicates that subsistence patterns in northern Shaanxi around 4,000 yr BP were characterized by millet farming,while the grassland animal husbandry,*** and sheep/goats raising,displayed very little contribution to local *** intensive millet farming in northern Shaanxi provided enough food for population growth,ensured the accumulation of wealth,and consequently accelerated social differentiation and complexity.

关键词：稳定同位素陕西北部 BP 生存模式显示碳氮遗址中国

Solvent-free 1,3-Dipolar Cycloaddition of Azomethine Imines with Terminal Alkynes Promoted by Calcium Fluoride Under the Ball Milling Condition

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Chemical Research in Chinese Universities 2015年第4期31卷 543-548页

作者： chen xianglong JIA Chunman CAO Li ZHANG Dela LIU Shuixiang ZHANG Qil Hainan Provincial Key Lab of Fine Chem. Key Study Center of Ministry of Education for Tropical Resources Utilization Hainan University Haikou 570228 P R. China

A convenient and efficient procedure for the synthesis ofN, N-bicyclic pyrazolidinone derivatives has been developed via the reaction of azomethine imines with terminal alkynes under the ball milling condition without sol- vent, which was promoted by calcium fluoride with a catalyst of copper（I） salt. The cyclization reactions exhibited moderate to high yields.

关键词： Ball-milling 1,3-Dipolar cycloaddition Click chemistry Solvent-free reaction

开关磁阻风力发电机-齿轮传动系统集成设计与分析

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太阳能学报 2023年第3期44卷 111-119页

作者：刘长钊陈祥龙罗键重庆大学机械传动国家重点实验室重庆400044 重庆大学机械与运载工程学院重庆400030

为实现开关磁阻型风电机组轻量化的设计目标、提高设计效率,提出一种开关磁阻风力发电机-齿轮传动系统参数集成设计方法。该方法以开关磁阻风力发电机和齿轮传动系统结构参数为设计变量,以系统质量最小为优化目标。基于有限元法计算开... 详细信息

为实现开关磁阻型风电机组轻量化的设计目标、提高设计效率,提出一种开关磁阻风力发电机-齿轮传动系统参数集成设计方法。该方法以开关磁阻风力发电机和齿轮传动系统结构参数为设计变量,以系统质量最小为优化目标。基于有限元法计算开关磁阻发电机磁链与转矩特性矩阵。在此基础上,建立开关磁阻发电机非线性动态仿真模型以计算开关磁阻发电机动态转矩,并应用模拟退火算法优化开关角,获得最大发电机转矩,最后采用下山单纯形优化方法迭代发电机-齿轮系统质量,获得满足设计要求前提下系统质量收敛时的设计变量值。该优化过程优化套优化,可最大程度降低系统质量。上述设计流程通过脚本实现自动化运行以提高设计效率,可实现开关磁阻发电机-齿轮系统轻量化参数集成设计。基于该方法,针对8 MW风电机组进行参数设计,并与现有的相同发电容量永磁型风电机组的质量和发电机转矩性能对比。结果表面:通过该方法设计开关磁阻风力发电机-齿轮传动系统可保证发电机具有良好的转矩性能,同时可有效降低系统质量,且可极大地提升设计效率。

关键词：风电机组轻量化集成设计参数优化开关磁阻发电机设计效率

Gut commensal metabolite rhamnose promotes macrophages phagocytosis by activating SLC12A4 and protects against sepsis in mice

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Acta Pharmaceutica Sinica B 2024年第7期14卷 3068-3085页

作者： Dongping Li Rongjuan Wei xianglong Zhang Shenhai Gong Meijuan Wan Fangzhao Wang Jiaxin Li Meiling chen Ruofan Liu Yantong Wan Yinghao Hong Zhenhua Zeng Peng Gu Zhang Wang Kutty Selva Nandakumar Yong Jiang Hongwei Zhou Peng chen Department of Pathophysiology Guangdong Provincial Key Laboratory of ProteomicsSchool of Basic Medical SciencesSouthern Medical UniversityGuangzhou 510000China Department of Critical Care Medicine Nanfang HospitalSouthern Medical UniversityGuangzhou 510000China Department of Gastroenterology Shenzhen HospitalSouthern Medical UniversityShenzhen 518000China dInstitute of Ecological Sciences School of Life SciencesSouth China Normal UniversityGuangzhou 510000China Department of Environmental and Biosciences School of BusinessInnovation and SustainabilityKristian IV’s vag 3Halmstad UniversityHalmstad 30004Sweden Microbiome Medicine Center Zhujiang HospitalSouthern Medical UniversityGuangzhou 510000China

Sepsis progression is significantly associated with the disruption of gut ***,the modulatory mechanisms of gut microbiota operating during sepsis are still ***,we investigated how gut commensals impact sepsis development in a pre-clinical *** ligation and puncture(CLP)surgery was used to establish polymicrobial sepsis in *** depleted of gut microbiota by an antibiotic cocktail(ABX)exhibited a significantly higher level of mortality than *** determined by metabolomics analysis,ABX treatment has depleted many metabolites,and subsequent supplementation with L-rhamnose(rhamnose,Rha),a bacterial carbohydrate metabolite,exerted profound immunomodulatory properties with a significant enhancement in macrophage phagocytosis,which in turn improved organ damage and ***,rhamnose binds directly to and activates the solute carrier family 12(potassium-chloride symporter),member 4(SLC12A4)in macrophages and promotes phagocytosis by activating the small G-proteins,Ras-related C3 botulinum toxin substrate1(Rac1)and cell division control protein 42 homolog(Cdc42).Interestingly,rhamnose has enhanced the phagocytosis capacity of macrophages from sepsis *** conclusion,by identifying SLC12A4 as the host interacting protein,we disclosed that the gut commensal metabolite rhamnose is a functional molecular that could promote the phagocytosis capacity of macrophages and protect the host against sepsis.

关键词： Gut microbiota Sepsis Rhamnose SLC12A4 GTP-Rac1 GTP-Cdc42 Macrophage Phagocytosis

河北张家口白庙墓地东周人群华夏化的生业经济基础

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第四纪研究 2022年第4期42卷 1136-1147页

作者：陈相龙王明辉王鹏中国社会科学院考古研究所北京100101

东周时期,北方长城沿线农牧兼营人群在秦、赵、燕等列国的冲击下,部分被中原农耕文明浸润并逐渐同化,成为华夏族群的重要组成部分。为了深入认识北方长城沿线农牧兼营者华夏化的过程,本研究以冀北山地张家口地区为主要研究区域,以白庙... 详细信息

东周时期,北方长城沿线农牧兼营人群在秦、赵、燕等列国的冲击下,部分被中原农耕文明浸润并逐渐同化,成为华夏族群的重要组成部分。为了深入认识北方长城沿线农牧兼营者华夏化的过程,本研究以冀北山地张家口地区为主要研究区域,以白庙墓地出土人骨为研究对象,重建了白庙先民的食物结构,综合分析了白庙先民的生业经济与文化面貌之间的关系,以及白庙先民为代表的农牧兼营者融入华夏集团的生业基础。白庙先民的δ^(13)C与δ^(15)N(-8.6‰±0.6‰, 9.9‰±1.0‰, n=41)显示,春秋晚期至战国早期当地居民以粟、黍两种谷物及用粟作农业副产品饲养的家畜为主要食物,畜牧业产品仅作为食物资源的补充。分析认为,白庙先民对于粟作农业的依赖或承袭于本地新石器时代晚期的生业传统,而畜牧经济的出现则可视作当地先民在牛羊畜牧业随东西方文化互动不断东传的大背景下,根据生态过渡地带资源环境的特点而做出的适应性调整。如果说以农业为主、兼有畜牧业的生存策略是本地作为北方草原畜牧区与中原农业耕作区之间缓冲区在生业经济方面的呈现,那么白庙先民对于农业生产方式的依赖则可能是战国中期之后冀北山地被纳入华夏列国统治疆域的生业经济基础。

关键词：白庙碳、氮稳定同位素生业经济华夏化