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SapBase:A central portal for functional and comparative genomics of Sapindaceae species

Journal of Integrative Plant Biology 2024年第8期66卷 1561-1570页

作者： Jiawei Li Chengjie Chen Zaohai Zeng Fengqi Wu Junting Feng Bo liu Yingxiao Mai Xinyi Chu Wanchun Wei Xin Li Yanyang Liang yuanlong liu Jing Xu Rui Xia State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources College of HorticultureSouth China Agricultural UniversityGuangzhou 510640China Guangdong Laboratory for Lingnan Modern Agriculture South China Agricultural UniversityGuangzhou 510640China Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in South China at the Ministry of Agriculture and Rural Affairs South China Agricultural UniversityCollege of HorticultureGuangzhou 510640China

The Sapindaceae family,encompassing a wide range of plant forms such as herbs,vines,shrubs,and trees,is widely distributed across tropical and subtropical *** family includes economically important crops like litchi,longan,rambutan,and *** the wide application of genomic technologies in recent years,several Sapindaceae plant genomes have been decoded,leading to an accumulation of substantial omics data in this *** surge in data highlights the pressing need for a unified genomic data center capable of storing,sharing,and analyzing these ***,we introduced SapBase,that is,the Sapindaceae Genome *** houses seven published plant genomes alongside their corresponding gene structure and functional annotations,small RNA annotations,gene expression profiles,gene pathways,and synteny block *** offers user-friendly features for gene information mining,co-expression analysis,and interspecies comparative genomic ***,we showcased SapBase's extensive capacities through a detailed bioinformatic analysis of a MYB gene in ***,Sap Base could serve as an integrative genomic resource and analysis platform for the scientific exploration of Sapinaceae species and their comparative studies with other plants.

关键词： functional crops unified

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Electrochemical migration behavior of Ag-plated Cu-filled electrically conductive adhesives

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Rare Metals 2012年第1期31卷 64-70页

作者： Zhu, Xiaoyun liu, yuanlong Long, Jinming liu, Xiaoli School of Materials Science and Engineering Kunming University of Science and Technology Kunming 650093 China Faculty of Metallurgy and Energy Engineering Kunming University of Science and Technology Kunming 650093 China

The electrochemical migration (ECM) behavior of the electrically conductive adhesives (ECAs) filled with pure Ag powder or Ag-plated Cu composite powder with varied Ag:Cu ratios was investigated under the condition of applying constant voltage and distilled water *** resistance was determined from the current-time *** microstructure and composition of ECM dendrite products were analyzed by SEM/EDS and *** was found that the ECM resistance of Ag-plated Cu composite powder-filled ECAs was evidently higher than that of pure Ag powder-filled *** Ag:Cu ratio of composite powder in ECAs had notable influence on ECM resistance,which was enhanced with the decrease of Ag:Cu *** composition of dendrites formed between cathode and anode during ECM process was not uniform for Ag-plated Cu-filled *** ECM inhibiting mechanism of Ag-plated Cu composite powder was proposed according to analysis of the electrochemical impedance spectroscopy,Tafel plot and dendrite composition.

关键词： composite material electrochemical migration Ag-plated Cu composite powder electrically conductive adhesives

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基于Transformer的多麦克风融合降噪算法

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软件 2024年第1期45卷 53-55页

作者：花嵘张恒刘元龙山东科技大学计算机科学与工程学院山东青岛266590 西兴(青岛)技术服务有限公司山东青岛266000

多麦克风融合降噪技术旨在降低来自多种麦克风(声学麦克风、光学麦克风、骨传导麦克风)的语音噪声,提高信噪比,从而适应不同环境。针对传统多麦克风融合降噪算法在提取不同通道特征时效果不理想的问题,提出了一种基于Transformer的多麦... 详细信息

多麦克风融合降噪技术旨在降低来自多种麦克风(声学麦克风、光学麦克风、骨传导麦克风)的语音噪声,提高信噪比,从而适应不同环境。针对传统多麦克风融合降噪算法在提取不同通道特征时效果不理想的问题,提出了一种基于Transformer的多麦克风融合降噪算法。该算法有3个主要步骤,首先采用多头注意力机制使每个通道能够学习到不同的权重,更好地学习通道间的空间特征;其次将获得的通道特征以及原始特征输入到Transformer模型中,生成时域滤波器;最后通过一维卷积操作获得每个通道增强后的语音数据。实验结果表明,提出的算法能够达到更好的降噪效果。

关键词： Transformer 多麦克风融合降噪注意力机制特征融合

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Jack of Many Trades: The Multifaceted Role of miR528 in Monocots

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Molecular Plant 2019年第8期12卷 1044-1046页

作者： Chengjie Chen yuanlong liu Rui Xia State Key Laboratory for Conservation and Utilization of Subtropical AgroBioresources College of HorticultureSouth China Agricultural UniversityGuangzhou 510642China

MicroRNAs (miRNAs) are essential regulators,involved in almost all aspects of plant growth and *** plants,miRNAs prese nt in all an giosperms are regarded as con served miRNAs;in contrast,miRNAs restricted to certain lineages (lessconserved) or a single species (species-specific) constitute the non-conserved miRNAs (Cuperus et al.,2011).Different members of a miRNA family usually target similar target genes from a gene family among different *** in stance,in most analyzed plants,the well-known miR156 family,usually consist!ng of a number of members in a given species,collectively target SQUAMOSA-PROMOTER BINDING PROTEINLIKE (SPL) *** erally,con served miRNAs target genes encoding transcript factors which function in diverse biological *** functional diversity of miRNAs is mainly achieved by the plasticity of their target genes from the same family,such as miR156-targeted SPLs and miR167-targeted ARF (AUXIN RESPONSIVE FACTOR) genes,on regulating distinct downstream gen es.

关键词： Multifaceted Role miR528 Monocots

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Comprehensive Characterization of miRNA and PHAS Loci in the Diploid Strawberry(Fragaria vesca) Genome

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Horticultural Plant Journal 2019年第6期5卷 255-267页

作者： Lei Feng Rui Xia yuanlong liu State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources South China Agricultural UniversityGuangzhou 510642China Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in South China Ministry of AgricultureSouth China Agricultural UniversityGuangzhou 510642China Guangdong Litchi Engineering Research Center College of HorticultureSouth China Agricultural UniversityGuangzhou 510642China

Small RNAs(sRNAs) are vital regulators of gene expression and involved in various biological processes. Among them, micro RNAs(mi RNAs) and phased small interfering RNAs(phasi RNAs) have been well defined and studied in the past decades. A bunch of scripts or pipelines were developed to annotate mi RNAs and phasi RNAs. However, some computational annotations are rough and without careful manual check,resulting in low quality annotation. In this study, 19 public strawberry(Fragaria vesca) s RNA sequencing data from nine different tissues were collected to annotate mi RNAs and PHAS loci in F. vesca. After bioinformatics analysis and careful manual checking, 167 known mi RNAs, 27 mi RNA*s with notable abundance, 54 novel mi RNAs were accurately annotated. The terms of two mi RNAs were corrected from mi R477 b and mi R5225 using mi RN47 and mi R3627 h, respectively. Besides 21 nucleotides(nt) mi R390, eleven mi RNAs with a length of 22-nt are in charge of triggering the biogenesis of 21-nt phasi RNAs from 110 PHAS loci in strawberry. In particular, we found several PHAS loci were targeted by two different mi RNAs(similar to the "two-hit" model) and the phasi RNA generating region located between two target sites. We speculate that one target site is in control of triggering phasi RNA biogenesis and the other target site define the boundary of the region of phasi RNA biogenesis,which likely provide an accurate way for phasi RNA generation. Overall, we provided a comprehensive and accurate annotation of mi RNAs and PHAS loci in the F. vesca genome.

关键词： Fragaria vesca miRNA PHAS loci annotation phasiRNA biogenesis model

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基于威胁情报语义规则抽取的智能变电站告警分析方法

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信息安全与通信保密 2024年第3期 43-51页

作者：王文婷刘远龙刘潮王赫刘京浙江大学浙江杭州310058 国网山东省电力公司电力科学研究院山东济南250003 国网山东省电力公司山东济南250003 国网思极网安科技(北京)有限公司北京102209 东北电力大学吉林吉林132012

威胁情报作为一种弥补攻防信息不对称的安全技术,能够帮助安防人员发现威胁行为,并采取相应的预防措施。近年来,威胁情报研究受到业界广泛关注,然而现有的研究对威胁情报的利用率较低,为此,提出了一种基于威胁情报语义规则抽取的智能变... 详细信息

威胁情报作为一种弥补攻防信息不对称的安全技术,能够帮助安防人员发现威胁行为,并采取相应的预防措施。近年来,威胁情报研究受到业界广泛关注,然而现有的研究对威胁情报的利用率较低,为此,提出了一种基于威胁情报语义规则抽取的智能变电站告警分析方法。首先,通过构建语义规则模型生成语义规则图,对攻击技术手段进行描述;其次,面向ATT&CK攻击技术文本构建语义规则抽取框架,对攻击技术文本进行知识抽取,从中得到语义规则。该方法在解决智能变电站告警信息冗余繁杂问题的同时,提升了威胁情报的利用率,实现了对高层级威胁情报的自动化分析与处理。

关键词：威胁情报智能变电站 ATT&CK框架语义规则知识抽取

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基于分布式麦克风阵列的室内拾音系统设计

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软件工程 2024年第7期27卷 65-68页

作者：花嵘刘元龙黄泽源山东科技大学计算机科学与工程学院山东青岛266590 西兴(青岛)技术服务有限公司山东青岛266000

为了提高室内分布式麦克风阵列声源定位的精度,为后续更好地进行语音处理做准备,文章提出了一种新的麦克风阵列设计方案。将波束形成(BF)算法、多重信号分类(MUSIC)算法、广义互相关(GCC)算法分别应用在系统中进行测试,根据测试结果选... 详细信息

为了提高室内分布式麦克风阵列声源定位的精度,为后续更好地进行语音处理做准备,文章提出了一种新的麦克风阵列设计方案。将波束形成(BF)算法、多重信号分类(MUSIC)算法、广义互相关(GCC)算法分别应用在系统中进行测试,根据测试结果选取最适合本系统的算法。测试结果表明,GCC算法定位精度高且反应速度快,效果优于MUSIC算法和BF算法,因此选择GCC算法作为系统的定位算法。应用GCC算法的分布式麦克风阵列在室内环境中有较强的适用性,可为系统的其他操作提供良好的技术支撑。

关键词：分布式麦克风阵列声源定位 TDOA GCC

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Species-specific regulatory pathways of small RNAs play sophisticated roles in flower development in Dimocarpus longan Lour.

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Horticultural Plant Journal 2023年第2期9卷 237-249页

作者： Bo liu Guanliang Li Chengjie Chen Zaohai Zeng Jing Xu Jisen Zhang Rui Xia yuanlong liu State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources South China Agricultural UniversityGuangzhouGuangdong 510640China Guangdong Laboratory for Lingnan Modern Agriculture South China Agricultural UniversityGuangzhouGuangdong 510640China Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in South China Ministry of Agriculture and Rural AffairsSouth China Agricultural UniversityGuangzhouGuangdong 510640China Center for Genomics and Biotechnology Haixia Institute of Science and TechnologyCollege of Life SciencesFujian Agriculture and Forestry UniversityFuzhouFujian 350002China

Flower development plays vital role in horticultural ***-transcriptional regulation via small RNAs is important for plant flower *** uncover post-transcriptional regulatory networks during the flower development in Dimocarpus longan Lour.‘Shixia’,an economically important fruit crop in subtropical regions,we collected and analyzed sRNA deep-sequencing datasets and degradome libraries Apart from identifying miRNAs and phased siRNA generating loci(PHAS loci),120 hairpin loci,producing abundant sRNAs,were identified by in-house *** results suggested that 56 miRNA-target pairs,2221-nt-PHAS loci,and 111 hairpin loci are involved in posttranscriptional gene silencing during longan reproductive ***-specific or species-specific post-transcriptional regulatory modules have been unveiled,including miR482-PHAS and ***482-PHAS might be involved in longan flower development beyond their conserved roles in plant defense,and miRN15 is a novel miRNA likely associated with a hairpin locus(HPL-056)to regulate strigolactone receptor gene DWARF14(D14)and the biogenesis of phasiRNAs from *** small RNAs are enriched in flower buds,suggesting they are likely involved in post-transcriptional regulatory networks essential for longan flower development via the strigolactone signaling pathway.

关键词： Dimocarpus longan Lour Small RNAs Flower development Post-transcriptional regulation

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Design and performance investigation of modified dual reflector parabolic trough collector with double planar mirrors

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Science China(Technological Sciences) 2024年第3期67卷 902-918页

作者： LI Peijing liu TaiXiu QIN yuanlong LI JiChao liu QiBin School of Energy Powerand Mechanical EngineeringNorth China Electric Power University Beijing 226China Institute of Engineering Thermophysics Chinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China Department of Thermal Science and Energy Engineering University of Science and Technology of ChinaHefei 230027China

In a typical parabolic trough collector(PTC), sunlight is concentrated at the bottom of the absorber tube. This concentrated solar flux leads to uneven heat distribution, resulting in high local temperatures and significant thermal stress on the absorber *** limitations have restricted the application of PTCs in solar thermochemistry and other fields and have impacted their safe operation. In this study, a new PTC with dual planar mirrors(DPMS) is proposed to homogenize the circumferential solar flux distribution of the absorber tube. A design method and single-objective optimization of the new PTC with a DPMS are proposed,and an uncertainty analysis of the operational and structural parameters is performed. A coupled light-heat-structure numerical model was developed to study the heat transfer performance and structural mechanical properties. The thermodynamic properties of the PTC with DPMS under different boundary conditions were analyzed. The results show that the circumferential temperature difference of the new PTC is within 2.6 K, and the circumferential thermal deformation is within 0.9 mm under typical working conditions(the inlet velocity of the heat transfer fluid is 3 m/s, inlet temperature is 573.15 K, and the direct normal irradiance is 1000 W/m^(2)). Compared with conventional PTCs, the circumferential temperature difference is reduced by 74%–90%, and the maximum thermal deformation along the y-axis is reduced by more than 95% under all working conditions(1–5 m/s, 373.5–675.15 K, 200–1000 W/m^(2)). The new PTC maintains the uniformity of the circumferential solar flux distribution for different operating parameters(sun incident angle of 0°–3°) and installation errors(±3 mm), is suitable for solar energy applications in various fields, and has the potential for large-scale applications.

关键词： solar thermal energy parabolic trough collector secondary reflector solar flux distribution optical optimization

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Performance Enhancement of Parabolic Trough Collector by Using Homogenizer and Spiral

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Journal of Thermal Science 2024年第2期33卷 658-674页

作者： LI Peijing liu Taixiu QIN yuanlong ZHENG Zhimei ZHAO Kai liu Qibin School of Energy Powerand Mechanical EngineeringNorth China Electric Power UniversityBeijing102206China Institute of Engineering Thermophysics Chinese Academy of SciencesBeijing100190China University of Chinese Academy of Science Beijing100049China Department of Thermal Science and Energy Engineering University of Science and Technology of ChinaHefei230027China Research Institute of Science and Technology of China Three Gorges Group Corporation Beijing100038China

In conventional parabolic trough collectors(PTCs),sunlight is concentrated at the bottom of the absorber tube,resulting in a significant circumferential temperature gradient across the absorber tube,heat loss and thermal deformation,which affects the safety and thermal performance of *** this study,a new receiver with homogenizer and spiral(RHS) is proposed,achieving the optical and thermal synergy to ameliorate the thermal deformation of the absorber tube and enhance thermal efficiency.A plane structure homogenizer is designed to improve uniformity of the concentrated solar flux of absorber tube through second *** combination with the spiral,it improves the optical-thermal efficiency of the PTC by enhancing heat exchange between the fluid and the backlight side of the absorber *** performance of the collector is numerically studied by building a three-dimensional coupled light-thermal-structure *** results show that the thermal deformation of the RHS is reduced by more than 96% and the optical-thermal efficiency is improved by 1.2%-0.63% compared with conventional receivers(CRs) under the same inlet temperature *** proposed receiver is validated to be effective in reducing thermal deformation and improving optical-thermal efficiency.

关键词： parabolic trough collector homogenizer thermal deformation spiral

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