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Soil Ecology Letters 2023年第1期5卷 142-150页

作者： Yixin Sun xiaofang du Yingbin Li Xu Han Shuai Fang Stefan Geisen Qi Li CAS Key Laboratory of Forest Ecology Management Institute of Applied EcologyChinese Academy of SciencesShenyang 110016China University of Chinese Academy of Sciences Beijing 100049China Laboratory of Nematology Wageningen UniversityWageningenThe Netherlands

High-throughput sequencing technology is increasingly used in the study of nematode biodiversity.However,the annotation difference of commonly used primers and reference databases on nematode community is still unclear.We compared two pairs of primers(3NDf/C_1132rmod,NF1F/18Sr2bR)and three databases(NT_V20200604,SILVA138/18s Eukaryota and PR2_v4.5 databases)on the determination of nematode community from four different vegetation types in Changbai Mountain,including mixed broadleaf-conifer forest,dark coniferous forest,betula ermanii Cham and alpine tundra.Our results showed that the selection of different primers and databases influenced the annotation of nematode taxa,but the diversity of nematode community showed consistent pattern among different vegetation types.Our findings emphasize that it is necessary to select appropriate primer and database according to the target taxonomic level.The difference in primers will affect the result of nematode taxa at different classification levels,so sequencing analysis cannot be used for comparison with studies using different primers.In terms of annotation effect in this study,3NDf/C_1132rmod primers with NT_v20200604 database could provide more information than other combinations at the genus or species levels.

关键词： Soil nematodes Primer Database High-throughput sequencing Community composition

低信噪比地震数据图像结构引导去噪方法与应用

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石油物探 2024年第1期63卷 161-169,181页

作者：郑启明李琦都小芳吴高奎北京派特杰奥科技有限公司北京100044 中国地质大学(北京)海洋学院北京100083 中石油东方地球物理公司研究院河北涿州072751 中石化石油勘探开发研究院北京102249

地震噪声影响着复杂断裂结构与储层的刻画,有效压制噪声并保留地震资料中的结构信息,是解释性处理的关键。基于保边光滑原理,在地震数据处理中提出并引入图像结构引导滤波方法,实现自适应地保留断层、裂缝以及储层反射等关键信息并有效... 详细信息

地震噪声影响着复杂断裂结构与储层的刻画,有效压制噪声并保留地震资料中的结构信息,是解释性处理的关键。基于保边光滑原理,在地震数据处理中提出并引入图像结构引导滤波方法,实现自适应地保留断层、裂缝以及储层反射等关键信息并有效压制散射与随机噪声,提高地震数据信噪比。正演模拟数据的去噪试验结果表明,相比常规滤波方法,图像结构引导滤波方法具有更好的保边光滑特性;与构造导向滤波方法相比,该方法不需显式提取层位走向和倾角信息,具有较高的计算效率。实际三维资料的应用结果表明,该方法能有效压制不同类型噪声、提高信噪比和有效反射同相轴的连续性;处理后对应的相干属性可有效增强断裂、储层的分辨能力,更好地描述断裂系统的展布,有利于后续地震资料解释工作。

关键词：图像结构引导滤波保边光滑信噪比断层分辨能力不同类型噪声

Effect of grassland degradation on soil quality and soil biotic community in a semi-arid temperate steppe

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Ecological Processes 2020年第1期9卷 749-759页

作者： Xu Han Yuhui Li xiaofang du Yingbin Li Zhengwen Wang Siwei Jiang Qi Li Erguna Forest-Steppe Ecotone Research Station Institute of Applied EcologyChinese Academy of SciencesShenyang 110016China University of Chinese Academy of Sciences Beijing 100049China

Grasslands provide a number of ecosystem services for human society.Degradation of grasslands results in the loss of biodiversity and leads to the deterioration of ecosystem functions.In order to accurately assess the influence of grassland degradation on belowground ecosystems,we conducted experiments on a temperate steppe with different levels of degradation and investigated the influence of degradation on soil quality and soil biotic communities.Our results showed that grassland degradation significantly decreased soil quality,with lower values of soil quality index(SQI)observed in the degraded grassland than the meadow steppe and the grassland from the forest-steppe ecotone.Changes in the SQI along the grassland degradation gradient were positively correlated with soil carbon stock and the aboveground biomass,and negatively correlated with the root shoot ratio.Nematode trophic diversity and the ratio of fungal to bacterial PLFA were lower in the degraded grassland than the grassland from the forest-steppe ecotone.The dissimilarities in soil microbial and nematode community composition increased with the changes in soil quality index.Our results indicate that soil quality index based on the minimum data sets could effectively assess the influence of grassland degradation on soil biodiversity and ecosystem function.In order to effectively restore degraded grasslands,the key contributors to the soil quality,such as soil carbon,should be taken on priority basis for revitalizing the soil biodiversity and ecosystem function.

关键词： Soil quality Soil biodiversity Grassland degradation Soil nematode community

Mowing did not mitigate the negative effects of nitrogen deposition on soil nematode community in a temperate steppe

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Soil Ecology Letters 2021年第2期3卷 125-133页

作者： YINGBIN LI SIWEI LIANG xiaofang du Xinchang Kou Xiaotao Lv Qi Li Institute of Applied Ecology Chinese Academy of SciencesShenyang 110016China College of Land and Environment Shenyang Agricultural UniversityShenyang 110866ChinaInstitute of Applied EcologyChinese Academy of SciencesShenyang 110016China University of Chinese Academy of Sciences Beijing 100049China School of Geographical Sciences Northeast Normal UniversityChangchun 130024China

Soil nematodes are the most numerous components of the soil fauna in terrestrial ecosystems.The occurrence and abundance of nematode trophic groups determine the structure and function of soil food webs.However,little is known about how nitrogen deposition and land-use practice(e.***.mowing)affect soil nematode communities.We investigated the main and interactive effects of nitrogen addition and mowing on soil nematode diversity and biomass carbon in nematode trophic groups in a temperate steppe in northern China.Nitrogen addition and mowing significantly decreased the abundance of soil nematodes and trophic diversity but had no effects on nematode richness and the Shannon-Wiener diversity.Nitrogen addition influenced soil nematode communities through decreasing soil pH.Mowing influenced soil nematode communities through decreasing soil moisture.Nitrogen addition enhanced the bacterial energy channel but mowing promoted fungal energy channel in the soil micro-food web.Our study emphasizes that ecosystem function supported by soil organisms can be greatly influenced by nitrogen deposition,and mowing cannot mitigate the negative effects of nitrogen deposition on soil food webs.

关键词： Nematode biomass carbon Trophic group Soil food web Grassland management Nitrogen enrichment

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新型冷却结构在电池热管理中的分析与优化

汽车工程学报 2024年第3期14卷 491-501页

作者：刘泽宇杜小芳武汉理工大学汽车工程学院武汉430070 现代汽车零部件技术湖北省重点实验室武汉430070

针对传统液冷电池包内电池组散热不充分及表面温度一致性较差的问题,设计了一种基于风冷和液冷耦合冷却策略的新型电池包结构,利用Catia软件建立三维模型并运用Fluent软件进行仿真,研究结果表明,相较于单一液冷结构在2 C和2.5 C放电倍... 详细信息

针对传统液冷电池包内电池组散热不充分及表面温度一致性较差的问题,设计了一种基于风冷和液冷耦合冷却策略的新型电池包结构,利用Catia软件建立三维模型并运用Fluent软件进行仿真,研究结果表明,相较于单一液冷结构在2 C和2.5 C放电倍率下存在电池组过热问题,风冷液冷耦合的冷却结构在不同放电倍率下将最高温度和最大温差分别控制在45℃和5℃以内。探究了不同流体进口速度对电池组散热的影响,并选取风速5 m/s,冷却液流速0.5 m/s的最佳配合,在此基础上对流道进行针对性的优化,优化后电池组在同一工况下最高温度从27.95℃下降至26.82℃。这种新型结构将为后续的电池的热管理设计提供新思路。

关键词：风冷液冷新型结构电池热管理成组电池电池包

一种基于高频噪声定量约束函数的地震高分辨率处理方法

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石油物探 2024年第2期63卷 408-416页

作者：徐海王光付李发有孙建芳冯玉良都小芳中国石化石油勘探开发研究院北京102206 中国石化国际石油勘探开发有限公司北京100029 中国石油东方地球物理公司研究院地质研究中心河北涿州072750

系统分析了现有地震数据高分辨率处理方法的适用性及不足,探索了一种基于高频噪声定量约束函数的高分辨率处理方法,有效且保真地提高地震资料信噪比与分辨率。通过分析叠后地震数据有效信号带宽,设计了压制高频噪声的最大概率准则和定... 详细信息

系统分析了现有地震数据高分辨率处理方法的适用性及不足,探索了一种基于高频噪声定量约束函数的高分辨率处理方法,有效且保真地提高地震资料信噪比与分辨率。通过分析叠后地震数据有效信号带宽,设计了压制高频噪声的最大概率准则和定量约束函数,通过多次迭代压制噪声,提高全频带信号的信噪比,逐步分级拓宽地震有效频带宽度,循环迭代求取反射系数,将提取的地震子波与反射系数褶积得到高分辨率地震数据体。测试校验对比其它高分辨率地震处理结果,处理后的数据体具有垂向分辨率高、主频高且频带宽的特点,有效视主频由50 Hz提高至100 Hz左右,地质目标视分辨率相应提高近1倍。基于该提频数据与波阻抗反演实现了2~5 m地质目标的定性与定量预测,钻井验证符合率90%以上,有效指导井位部署。该方法弥补了在传统“有效带宽”内提高地震高频信号的不足,实现了全频带内重构高、低频有效信号的目的。

关键词：高分辨率高频噪声噪声定量约束函数多次迭代反射系数有效带宽

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完善民事虚假诉讼检察监督的司法路径

河南司法警官职业学院学报 2024年第1期22卷 90-94页

作者：丁先桂张华贵张星闫一铭杜晓芳张蕾张婷内蒙古自治区人民检察院内蒙古呼和浩特010020 西南政法大学重庆市401120 呼伦贝尔学院内蒙古呼伦贝尔021008 内蒙古呼伦贝尔市人民检察院内蒙古呼伦贝尔021008

虚假诉讼检察监督作为新时期民事检察工作的重要内容,在案源发现、调查取证、认定标准、惩戒追责等方面存在的困难仍是当前司法实践中亟待解决的问题。探析虚假诉讼检察监督的实践现状,通过构建大数据平台拓宽案源、建立预防惩戒监督机... 详细信息

虚假诉讼检察监督作为新时期民事检察工作的重要内容,在案源发现、调查取证、认定标准、惩戒追责等方面存在的困难仍是当前司法实践中亟待解决的问题。探析虚假诉讼检察监督的实践现状,通过构建大数据平台拓宽案源、建立预防惩戒监督机制、探索完善惩罚性侵权赔偿制度立法、加强社会综合治理等多项措施完善检察监督路径,以精准监督和司法融合保障社会信用体系建设。

关键词：虚假诉讼检察监督惩罚性赔偿

GNN-based temporal knowledge reasoning for UAV mission planning systems

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The Journal of China Universities of Posts and Telecommunications 2024年第1期31卷 12-25页

作者： Chai Rong duan xiaofang Wang Lixuan School of Communications and Information Engineering Chongqing University of Posts and TelecommunicationsChongqing 400065China

Unmanned aerial vehicles(UAVs)are increasingly applied in various mission scenarios for their versatility,scalability and cost-effectiveness.In UAV mission planning systems(UMPSs),an efficient mission planning strategy is essential to meet the requirements of UAV missions.However,rapidly changing environments and unforeseen threats pose challenges to UMPSs,making efficient mission planning difficult.To address these challenges,knowledge graph technology can be utilized to manage the complex relations and constraints among UAVs,missions,and environments.This paper investigates knowledge graph application in UMPSs,exploring its modeling,representation,and storage concepts and methodologies.Subsequently,the construction of a specialized knowledge graph for UMPS is detailed.Furthermore,the paper delves into knowledge reasoning within UMPSs,emphasizing its significance in timely updates in the dynamic environment.A graph neural network(GNN)-based approach is proposed for knowledge reasoning,leveraging GNNs to capture structural information and accurately predict missing entities or relations in the knowledge graph.For relation reasoning,path information is also incorporated to improve the accuracy of inference.To account for the temporal dynamics of the environment in UMPS,the influence of timestamps is captured through the attention mechanism.The effectiveness and applicability of the proposed knowledge reasoning method are verified via simulations.

关键词： unmanned aerial vehicle mission planning knowledge graph knowledge reasoning graph neural network

One dimensional CeO_(2) nanorods/poly(ethylene oxide) solid composite electrolyte for all-solid-state lithium-ion batteries

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Journal of Rare Earths 2024年第3期42卷 570-577,I0005页

作者： Yudi Guo Erqing Zhao xiaofang Zhao Shuailei Liu School of Chemistry and Materials Engineering Xinxiang UniversityXinxiang453003China School of Chemistry and Chemical Engineering Henan Institute of Science and TechnologyXinxiang453003China

The research of poly(ethylene oxide)(PEO)-based solid composite electrolyte with high ionic conductivity and excellent interfacial stability is the key to the development of all-solid-state lithium-ion batteries(ASSLIBs). Herein, uniform nanorod structured CeO_(2) fillers were controllably synthesized by electrospinning, which were subsequently filled into PEO polymer to prepare CeO_(2)/PEO solid composite electrolyte. The addition of CeO_(2) nanorods can reduce both the glass transition temperature and the melting point of PEO polymer, and also interact with PEO and lithium bis(trifluoromethanesulphonyl)imide(LITFSI) by Lewis acid—base reaction. Therefore, the solid composite electrolyte exhibits a high ionic conductivity of 4.52 × 10^(-4)S/cm, a wide electrochemical stability window of about 4.8 V, and a good interfacial stability with Li at 55℃. Moreover, the LiFePO_4/Li ASSLIB divulges the discharging specific capacity of 165, 162, 156 and 146 mA,h/g at 0.2, 0.5, 1 and 2 C, respectively, and achieves the capacity retention of 90.3% after 150 cycles at 0.5 C. Consequently, one dimensional CeO_(2) nanorods can be considered as an alternative filler for polymeric solid electrolyte.

关键词： Poly(ethylene oxide) Solid composite electrolyte CeO_(2)nanorods Ionic conductivity Rare earths

Deletion of heterogeneous nuclear ribonucleoprotein K in satellite cells leads to inhibited skeletal muscle regeneration in mice

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Genes & Diseases 2024年第4期11卷 102-105页

作者： Yongjie Xu Haixia Xu xiaofang Cheng Nuo Chen Yaling Wang Yueru Huang Jiahua Guo Yueqian Zheng Mengjia Zhang Chuunyu du Cunzhen Zhao Cencen Li Pengpeng Zhang College of Life Science Xinyang Normal UniversityXinyangHenan 464000China Institute for Conservation and Utilization of Agro-Bioresources in Dabie Mountain Xinyang Normal UniversityXinyangHenan 464000China

Heterogeneous nuclear ribonucleoprotein K(hnRNPK)is a predominantly nuclear RNA-binding protein that can bind to DNA or RNA through three KH domains and interact with multiple proteins by interactive region.These binding activities enable hnRNPK to link the function in a wide array of diverse cellular processes,such as chromatin remodeling,gene transcription,RNA metabolism,protein translation,DNA repair,and cell signal transduction,thereby playing crucial roles in many biological processes,including development,axonal regeneration,spermatogenesis,cell cycle,apoptosis,differentiation,and carcinogenesis.

关键词： inhibited metabolism carcinogenesis