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Cooperative structure of Li/Ni mixing and stacking faults for achieving high-capacity Co-free Li-rich oxides

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Journal of Energy Chemistry 2024年第8期95卷 315-324,I0007页

作者： Zhen Wu Yu-Han zhang Hao Wang Zewen Liu Xudong zhang Xin Dai Kunyang Zou Xiaoming Lou Xuechen Hu Lijing Ma Yan Liu Yongning Liu State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an 710049ShaanxiChina Qingdao Industrial Energy Storage Research Institute Qingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesQingdao 266101ShandongChina Hefei Advanced Computing Center Operation Management Corp Ltd Hefei 230088AnhuiChina Center for High Performance Computing Network Information CenterXi’an Jiaotong UniversityXi’an 710049ShaanxiChina Wuhan Dongfeng Motor Corporation Ltd Wuhan 430056HubeiChina School of Materials Science and Intelligent Engineering Nanjing UniversitySuzhou 215163JiangsuChina Key Laboratory of MEMS of the Ministry of Education Southeast UniversityNanjing 210096JiangsuChina International Research Center for Renewable Energy State Key Laboratory of Multiphase Flow in Power Engineering Xi’an Jiaotong UniversityXi’an 710049ShaanxiChina

Co-free Li-rich layered oxides(LLOs)are emerging as promising cathode materials for Li-ion batteries due to their low cost and high ***,they commonly face severe structural instability and poor electrochemical activity,leading to diminished capacity and voltage ***,we introduce a Co-free LLO,Li_(1.167)Ni_(0.222)Mn_(0.611)O_(2)(Cf-L1),which features a cooperative structure of Li/Ni mixing and stacking *** structure regulates the crystal and electronic structures,resulting in a higher discharge capacity of 300.6 mA h g^(-1)and enhanced rate capability compared to the typical Co-free LLO,Li_(1.2)Ni_(0.2)Mn_(0.6)O_(2)(Cf-Ls).Density functional theory(DFT)indicates that Li/Ni mixing in LLOs leads to increased Li-O-Li configurations and higher anionic redox activities,while stacking faults further optimize the electronic interactions of transition metal(TM)3d and non-bonding O 2p ***,stacking faults accommodate lattice strain,improving electrochemical reversibility during charge/discharge cycles,as demonstrated by the in situ XRD of Cf-L1 showing less lattice evolution than *** study offers a structured approach to developing Co-free LLOs with enhanced capacity,voltage,rate capability,and cyclability,significantly impacting the advancement of the next-generation Li-ion batteries.

关键词： Co-free Li-rich oxides Li/Ni mixing Stacking faults Electronic structure

基于双分支特征提取和自适应胶囊网络的DGA域名检测方法

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软件学报 2024年第8期35卷 3626-3646页

作者：杨宏宇章涛张良成翔胡泽中国民航大学安全科学与工程学院天津300300 中国民航大学计算机科学与技术学院天津300300 School of Information The University of ArizonaTucson AZ 85721USA 扬州大学信息工程学院江苏扬州225127

面向域名生成算法(domain generation algorithm,DGA)的域名检测方法普遍具有特征提取能力弱、特征信息压缩比高等特点,这导致特征信息丢失、特征结构破坏以及域名检测效果较差等诸多不足.针对上述问题,提出一种基于双分支特征提取和自... 详细信息

面向域名生成算法(domain generation algorithm,DGA)的域名检测方法普遍具有特征提取能力弱、特征信息压缩比高等特点,这导致特征信息丢失、特征结构破坏以及域名检测效果较差等诸多不足.针对上述问题,提出一种基于双分支特征提取和自适应胶囊网络的DGA域名检测方法.首先,通过样本清洗和字典构建重构原始样本并生成重构样本集;其次,通过双分支特征提取网络处理重构样本,在其中,利用切片金字塔网络提取域名局部特征,利用Transformer提取域名全局特征,并利用轻量级注意力融合不同层次的域名特征;然后,利用自适应胶囊网络计算域名特征图的重要度系数,将域名文本特征转换为向量域名特征,并通过特征转移计算基于文本特征的域名分类概率;同时,利用多层感知机处理域名统计特征,以此计算基于统计特征的域名分类概率;最后,通过合并得到的两种不同视角的域名分类概率进行域名检测.大量的实验表明,所提方法在DGA域名检测以及DGA域名家族检测分类方面均取得了当前领先的检测效果.在DGA域名检测中,F1分数提升了0.76%-5.57%;在DGA域名家族检测分类中,F1分数(宏平均)提升了1.79%-3.68%.

关键词： DGA域名检测深度学习双分支特征提取网络切片金字塔网络自适应胶囊网络

The transcriptional control of LcIDL1–LcHSL2 complex by LcARF5 integrates auxin and ethylene signaling for litchi fruitlet abscission

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Journal of Integrative Plant Biology 2024年第6期66卷 1206-1226页

作者： Xingshuai Ma Zidi He Ye Yuan Zhijian Liang Hang zhang Vilde Olsson Lalun Zhuoyi Liu Yanqing zhang Zhiqiang Huang Yulian Huang Jianguo Li Minglei Zhao State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources Guangdong Laboratory for Lingnan Modern AgricultureKey Laboratory of Biology and Genetic Improvement of Horticultural Crops(South China)Ministry of Agriculture and Rural AffairsGuangdong Litchi Engineering Research CenterCollege of HorticultureSouth China Agricultural UniversityGuangzhou 510642China Dongguan Botanical Garden Dongguan 523128China Section for Genetics and Evolutionary Biology Department of BiosciencesUniversity of OsloBlindernveien 31Oslo 0316Norway College of Agriculture Guangxi UniversityNanning 530004China

At the physiological level,the interplay between auxin and ethylene has long been recognized as crucial for the regulation of organ abscission in ***,the underlying molecular mechanisms remain ***,we identified transcription factors involved in indoleacetic acid(IAA)and ethylene(ET)signaling that directly regulate the expression of INFLORESCENCE DEFICIENT IN ABSCISSION(IDA)and its receptor HAESA(HAE),which are key components initiating ***,litchi IDAlike 1(LcIDL1)interacts with the receptor HAESA-like2(LcHSL2).Through in vitro and in vivo experiments,we determined that the auxin response factor LcARF5 directly binds and activates both LcIDL1 and ***,we found that the ETHYLENE INSENSITIVE 3-like transcription factor LcEIL3 directly binds and activates *** expression of IDA and HSL2 homologs was enhanced in Lc ARF5and Lc EIL3 transgenic Arabidopsis plants,but reduced in ein3 eil1 ***,the expressions of LcIDL1 and LcHSL2 were significantly decreased in Lc ARF5-and LcEIL3-silenced fruitlet abscission zones(FAZ),which correlated with a lower rate of fruitlet *** of auxin led to an increase in 1-aminocyclopropane-1-carboxylic acid(the precursor of ethylene)levels in the litchi FAZ,followed by abscission *** this process,LcRF5 and LcEIL3 were induced in the ***,our findings suggest that the molecular interactions between litchi AUXIN RESPONSE FACTOR 5(LcARF5)-LcIDL1/LcHSL2 and LcEIL3–LcIDL1 signaling modules play a role in regulating fruitlet abscission in litchi and provide a long-sought mechanistic explanation for how the interplay between auxin and ethylene is translated into the molecular events that initiate abscission.

关键词： auxin ethylene fruit abscission IDA–HAE/HSL2 litchi

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水土平衡的生境营造模式及其工程应用

北京大学学报（自然科学版） 2024年第1期60卷 165-174页

作者：王志勇李嘉宁彭晓洪敏张凯中国环境科学研究院北京100012 北京大学景观设计学研究院北京100871 北京大学城市与环境学院北京100871 安徽建筑大学建筑与规划学院合肥230601

对我国农业生产中的23种理水造田智慧进行梳理,总结其处理水土关系的方法,发现通过就地填挖土方,将雨水径流进行收集或分离,在局部与土壤形成一种动态稳定的互生互养关系,是营造可种植生境的核心。在此基础上,提炼出“挖凹以集蓄塑造汇... 详细信息

对我国农业生产中的23种理水造田智慧进行梳理,总结其处理水土关系的方法,发现通过就地填挖土方,将雨水径流进行收集或分离,在局部与土壤形成一种动态稳定的互生互养关系,是营造可种植生境的核心。在此基础上,提炼出“挖凹以集蓄塑造汇水区、堆凸以分流塑造分水岭”的两种生境营造模式。依据地形坡度与河水淹没范围之间的动态关系,提出两种生境营造模式在流域尺度的空间分布范式——多尺度分水岭–汇水区的嵌套结构。将两种生境营造模式应用于生态修复工程实践,证明其具有处理水土平衡关系、营造可种植生境的潜力,可为当前我国的生态修复工程提供方法和技术参考。

关键词：设计生态传统生态智慧生境营造生态修复基于自然的解决方案

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Electrolytes additives for Zn metal anodes: regulation mechanism and current perspectives

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Rare Metals 2024年第9期43卷 4162-4197页

作者： Yu-Zhe zhang Huai-Sheng Ao Qi Dong Shao-Jie zhang Zhi-Guo Hou Na-Na Wang Xue-Song Xie Jian Rong Zhong-Yu Li School of Environmental Science and Engineering Changzhou University School of Petrochemical Engineering Changzhou University Hefei National Laboratory for Physical Science at Microscale School of Chemistry and Materials Science University of Science and Technology of China Institute for Superconducting and Electronic Materials Australian Institute for Innovative Materials Innovation Campus University of Wollongong Department of Chemical and Materials Engineering University of Alberta

With distinct advantages such as high gravimetric and volumetric capacity(5855 mAh·cm-3and 820mAh·g-1), low redox potential(-0.762 V vs. standard hydrogen electrode（SHE）), high abundance, low toxicity and intrinsic safety of Zn metal anode, Zn-ion batteries have become a potential alternative to Li-ion ***, several challenges still need to be addressed prior to the practical applications of Zn-ion batteries, such as dendrite growth during Zn plating/stripping and interfacial side reactions on the Zn surface. Such issues can be addressed by introducing additives to regulate the components and structures of the electrolyte. In this review, we systematically discussed the core issues of metallic Zn anodes and comprehensively summarized a novel perspective of the regulation mechanism of inhibiting dendrite growth or interfacial side reactions in Zn anodes by introducing additives into aqueous ***, some discussions and prospects for aqueous Zn ion batteries（AZIBs） are presented for future research.

关键词： AZIBs Current perspectives Electrolyte additives Regulation mechanism Zn metal anode

Parameterization,sensitivity,and uncertainty of 1-D thermodynamic thin-ice thickness retrieval

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Acta Oceanologica Sinica 2024年第7期 93-111页

作者： Tianyu zhang Mohammed Shokr Zhida zhang Fengming Hui Xiao Cheng Zhilun zhang Jiechen Zhao Chunlei Mi School of Geospatial Engineering and Science Sun Yat-Sen University/Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) Key Laboratory of Comprehensive Observation of Polar Environment (Sun Yat-Sen University) Ministry of Education State Key Laboratory of Remote Sensing Science College of Global Change and Earth System Science Beijing Normal University Science and Technology Branch Environment and Climate Change Canada Qingdao Innovation and Development Base (Centre) Harbin Engineering University State Key Laboratory of Resources and Environmental Information System Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences University of Chinese Academy of Sciences

Retrieval of Thin-Ice Thickness(TIT) using thermodynamic modeling is sensitive to the parameterization of the independent variables(coded in the model) and the uncertainty of the measured input variables. This article examines the deviation of the classical model's TIT output when using different parameterization schemes and the sensitivity of the output to the ice thickness. Moreover, it estimates the uncertainty of the output in response to the uncertainties of the input variables. The parameterized independent variables include atmospheric longwave emissivity, air density, specific heat of air, latent heat of ice, conductivity of ice, snow depth, and snow conductivity. Measured input parameters include air temperature, ice surface temperature, and wind *** the independent variables, the results show that the highest deviation is caused by adjusting the parameterization of snow conductivity and depth, followed ice conductivity. The sensitivity of the output TIT to ice thickness is highest when using parameterization of ice conductivity, atmospheric emissivity, and snow conductivity and depth. The retrieved TIT obtained using each parameterization scheme is validated using in situ measurements and satellite-retrieved data. From in situ measurements, the uncertainties of the measured air temperature and surface temperature are found to be high. The resulting uncertainties of TIT are evaluated using perturbations of the input data selected based on the probability distribution of the measurement error. The results show that the overall uncertainty of TIT to air temperature, surface temperature, and wind speed uncertainty is around 0.09 m, 0.049 m, and-0.005 m, respectively.

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Impact of transparent exopolymer particles on the dynamics of dissolved organic carbon in the Amundsen Sea,Antarctica

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Advances in Polar Science 2024年第1期35卷 123-131页

作者： HU Ji XUE Siyou ZHAO Jun LI Dong zhang Haifeng YU Peisong zhang Cai YANG Xufeng PAN Jianming Key Laboratory of Marine Ecosystem Dynamics Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China College of Ocean and Earth Sciences Xiamen UniversityXiamen 361102China

The Southern Ocean is an important carbon sink pool and plays a critical role in the global carbon *** Amundsen Sea was reported to be highly productive in inshore area in the Southern *** order to investigate the influence of transparent exopolymer particles(TEP)on the behavior of dissolved organic carbon(DOC)in this region,a comprehensive study was conducted,encompassing both open water areas and highly productive *** was found that microbial heterotrophic metabolism is the primary process responsible for the production of humic-like fluorescent components in the open *** relationship between apparent oxygen utilization and the two humic-like components can be accurately described by a power-law function,with a conversion rate consistent with that observed *** presence of TEP was found to have little impact on this ***,the study revealed the accumulation of DOC at the sea surface in the Amundsen Sea Polynya,suggesting that TEP may play a critical role in this *** findings contribute to a deeper understanding of the dynamics and surface accumulation of DOC in the Amundsen Sea Polynya,and provide valuable insights into the carbon cycle in this region.

关键词： dissolved organic matter chromophoric dissolved organic matter excitation-emission matrix coupled with parallel factor analysis transparent exopolymer particles Amundsen Sea Antarctica

Germylene-Fe complexes caused by heterometallic coupling and investigation into the 3d-4p bonding

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Chinese Chemical Letters 2024年第3期35卷 304-307页

作者： Yingying Qin Yongmei Kang Lei zhang Jianping Sun Zhijing zhang Jialei Xu Fanlong Zeng Anyang Li Wenyuan Wang Weiqun Shi Key Laboratory of Synthetic and Natural Functional Molecule of Ministry of Education College of Chemistry and Materials ScienceNorthwest UniversityXi'an 710127China Laboratory of Nuclear Energy Chemistry Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Shaanxi Coal and Chemical Industry Xi'an 710054China

The interpretation of heterometallic bonding nature is a basic work of inorganic *** means of intermetallic substitution of germylene anions with iron halide complexes CpFe(CO)_(2)I andβ-diketiminato Fe^Ⅱchloride,the ferrogermylene complexes 3a,3b and 4a were synthesized and structurally *** structural and IR characterizations show the presence of the Ge←Feπbackbonding in molecules 3a,3b and *** computational works on frontier molecular orbitals and their comparison of energy states confirmed thatσdonation andπbackbonding are both weak in these molecules,despite three complexes have longer Ge-Fe bonds,whose strength decreases slightly with the degressive electron density around Fe environment in a sequence from 3a,3b to 4a.

关键词： Metallic bonding Germylene Iron Crystal structure σbond πbackbond

利用便捷式可见-近红外光谱仪和机器学习分辨霉变小麦及霉变程度

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智慧农业（中英文） 2024年第1期6卷 89-100页

作者：贾文珅吕浩林张上秦英栋周巍三峡大学计算机与信息学院湖北宜昌443002 北京市农林科学院质量标准与检测技术研究所北京100097 河北省食品检验研究院河北石家庄050000

[目的/意义]可见-近红外光谱可对小麦霉变情况快速无损检测,但是高分辨率光谱仪价格高、体积大,不利于在农业环境中推广,因此通过对低分辨率光谱数据进行优化处理,以期接近高分辨率光谱仪分辨霉变小麦的效果。[方法]使用可见-近红外农... 详细信息

[目的/意义]可见-近红外光谱可对小麦霉变情况快速无损检测,但是高分辨率光谱仪价格高、体积大,不利于在农业环境中推广,因此通过对低分辨率光谱数据进行优化处理,以期接近高分辨率光谱仪分辨霉变小麦的效果。[方法]使用可见-近红外农产品检测仪(型号VNIAPD,分辨率1.6 nm)和复享光纤光谱仪(型号SIN02040,分辨率0.19 nm)采集100份小麦样本的新鲜状态以及不同霉变状态的光谱数据。首先对SINO2040光谱进行裁剪,让其和VNIAPD波长保持一致,均为640~1 050 nm;然后对其使用标准差标准化(Standard Deviation Normalization,SDN)、标准正态变换(Standard Normal Variation,SNV)、均值中心化(Mean Centrality,MC)、一阶导数(First-order Derivatives,1ST)、Savitzky-Golay平滑(Savitzky-Golay Smoothing,SG)、多元散射校正(Multiple Scattering Correction,MSC)等多种预处理方法处理并使用离群点检测算法(Local Outlier Factor,LOF)筛选出离群点并剔除;其次使用连续投影算法(Sequential Projection Algorithm,SPA)和最小绝对收缩和选择算法(Least Absolute Shrinkage and Selection Operator,LASSO)对预处理后的光谱进行特征波长提取;最后分别采用K近邻算法(K-Nearest Neighbor,KNN)、支持向量机(Support Vector Machine,SVM)、随机森林(Random Forests,RF)和朴素贝叶斯(Na?ve-Bayes)、后向传播神经网络(Back Propagation Neural Network,BPNN)、深度神经网络(Deep Neural Networks,DNN)6种算法对特征波长光谱进行建模分析,从而分辨霉变小麦以及区分霉变程度。[结果和讨论]BPNN、DNN两种神经网络模型的测试集准确率均可达到100%,但是建模时间长,模型内存大;而KNN、SVM、RF和Na?ve-Bayes浅层模型的测试集准确率为93.18%~100%,建模速度快、模型内存小。本研究光谱仪VNIAPD在光学参数(光学分辨率1.6 nm)低于SINO2040的光学参数(光学分辨率0.19 nm)且成本更低的情况下,检测准确率到达同一水平。[结论]本研究通过对比光谱数据的不同预处理方法从而找出了对应算法的最佳数据优化选择,使低分辨率光谱仪VNIAPD检测霉变小麦性能可以追平高分辨率光谱仪SINO2040,为基于可见-近红外光谱的小麦霉变低成本无损检测提供了新选择。

关键词：可见-近红外光谱小麦霉变机器学习无损检测食品安全神经网络