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1347例HIV-1抗体阳性标本蛋白质印迹带型分析

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国际检验医学杂志 2025年第3期46卷 325-328,334页

作者：喻娇宋敏中国人民解放军陆军军医大学第一附属医院输血科重庆400030

目的分析1347例人类免疫缺陷病毒(HIV)-1抗体阳性标本蛋白质印迹(WB)带型。方法收集该院2013-2023年经WB法确证为HIV-1抗体阳性标本1347例,比较不同性别、年龄段、感染途径、病毒载量HIV-1抗体阳性标本WB带型分布。结果1347例HIV-1抗体... 详细信息

目的分析1347例人类免疫缺陷病毒(HIV)-1抗体阳性标本蛋白质印迹(WB)带型。方法收集该院2013-2023年经WB法确证为HIV-1抗体阳性标本1347例,比较不同性别、年龄段、感染途径、病毒载量HIV-1抗体阳性标本WB带型分布。结果1347例HIV-1抗体阳性标本WB带型中以7条带(22.6%)、8条带(20.2%)、9条带(14.8%)、全带(24.4%)为主。女性HIV-1抗体阳性标本中条带p55阳性率明显高于男性HIV-1抗体阳性标本,差异有统计学意义(P0.05)。结论gp160、gp120、gp41、p24是确证HIV-1抗体阳性必不可少的条带,与地域、遗传背景、HIV-1病毒亚型等无明显关系,除此之外的其他条带在各地区人群中有些许差异,根据这些差异,开展获得性免疫缺陷综合征人群的精准防治。

关键词：人类免疫缺陷病毒蛋白质印迹带型

Edge supercurrent in Josephson junctions based on topological materials

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Science China(Physics,Mechanics & Astronomy) 2025年第2期68卷 1-12页

作者： Junjie Qi Chui-Zhen Chen Juntao song Jie Liu Ke He Qing-Feng Sun X.C.xie Beijing Academy of Quantum Information Sciences Beijing 100193China School of Physical Science and Technology Soochow UniversitySuzhou 215006China Institute for Advanced Study Soochow UniversitySuzhou 215006China College of Physics and Hebei Advanced Thin Films Laboratory Hebei Normal UniversityShijiazhuang 050024China School of Physics Xi’an Jiaotong UniversityMinistry of Education Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed MatterXi’an 710049China State Key Laboratory of Low Dimensional Quantum Physics Department of PhysicsTsinghua UniversityBeijing 100084China Frontier Science Center for Quantum Information Beijing 100084China Hefei National Laboratory Hefei 230088China International Center for Quantum Materials School of PhysicsPeking UniversityBeijing 100871China Interdisciplinary Center for Theoretical Physics and Information Sciences Fudan UniversityShanghai 200433China

The interplay between novel topological states and superconductivity has garnered substantial interest due to its potential for topological quantum *** Josephson effect serves as a useful probe for edge superconductivity in these hybrid topological *** Josephson junctions based on topological materials,supercurrents exhibit unique quantum interference patterns,including the conventional Fraunhofer oscillations,theΦ_(0)-periodic oscillation,and the 2Φ_(0)-periodic oscillation in response to the external magnetic field(Φ_(0)=h/2e is the flux quantum,h the Planck constant,and e the electron charge).These interference patterns stem from varied Andreev reflection mechanisms and the associated current density *** review seeks to comprehensively examine the theoretical and experimental advancements in understanding the quantum interference patterns of edge supercurrents in Josephson junctions based on quantum spin Hall,quantum Hall,and quantum anomalous Hall systems.

关键词： quantum Hall effect quantum spin Hall effect quantum anomalous Hall effect Josephson junction edge supercurrent Andreev reflection

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基于图像识别技术的风力机叶片损伤检测研究

工程热物理学报 2025年第1期46卷 92-97页

作者：邢义宋力刘波陈永艳焦晓峰冯博宇内蒙古工业大学能源与动力工程学院呼和浩特010051 风能太阳能利用技术教育部重点实验室呼和浩特010051 内蒙古工业大学数据科学与应用学院呼和浩特010051 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司呼和浩特010020

风力机受恶劣环境影响,叶片表面极易出现损伤,针对其损伤尺寸小、形状样式多变的问题,本文提出了一种基于改进YOLOv5的轻量化风力机叶片表面损伤检测算法。根据基础网络对小目标位置检测偏差敏感的特点,将NWD与IOU两种损失度量方式相结... 详细信息

风力机受恶劣环境影响,叶片表面极易出现损伤,针对其损伤尺寸小、形状样式多变的问题,本文提出了一种基于改进YOLOv5的轻量化风力机叶片表面损伤检测算法。根据基础网络对小目标位置检测偏差敏感的特点,将NWD与IOU两种损失度量方式相结合;同时,为降低网络复杂度,提高网络性能,在YOLOv5模型主干网络中融入多维动态卷积ODConv。实验结果表明,改进后网络计算复杂度降低45%,算法的平均精度提升8.3%,能较好地识别出风力机叶片表面损伤。

关键词：风力机叶片表面损伤检测小目标检测

考虑停运概率熵和网架结构熵的电网关键线路辨识方法

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电力系统自动化 2025年第1期49卷 139-149页

作者：潘松李长城康海鹏黄思琪苏子扬张玺广西电力系统最优化与节能技术重点实验室(广西大学) 广西壮族自治区南宁市530004 电力传输与功率变换控制教育部重点实验室(上海交通大学) 上海市200240

线路停运概率对连锁故障的触发和演化具有重要影响。然而,现有关于电网线路停运概率分布均衡性的研究存在考虑不足的问题。文中结合复杂网络理论分析方法与熵理论,提出综合考虑停运概率熵和网架结构熵的电网关键线路辨识方法,旨在量化... 详细信息

线路停运概率对连锁故障的触发和演化具有重要影响。然而,现有关于电网线路停运概率分布均衡性的研究存在考虑不足的问题。文中结合复杂网络理论分析方法与熵理论,提出综合考虑停运概率熵和网架结构熵的电网关键线路辨识方法,旨在量化线路在电网运行状态和网络状态层面的综合影响力。首先,基于线路停运概率模型,提出了停运概率分布熵与停运概率变化熵指标,区分了线路潮流在正常值范围内、正常值与极限值之间和大于极限值3个状态对辨识结果的影响,克服了现有指标中对直接影响线路故障因素考虑欠缺的不足。其次,结合改进网架结构熵,提出了反映电网网架结构和运行状态的关键线路综合指标。然后,结合功率平衡策略,提出电网关键线路辨识方法。最后,基于改进网络效能指标对IEEE 39节点系统和IEEE 118节点系统进行仿真,验证了所提方法的可行性和正确性。

关键词：线路辨识复杂网络连锁故障熵停运概率网络效能

Exploration of Gas‑Dependent Self‑Adaptive Reconstruction Behavior of Cu_(2)O for Electrochemical CO_(2) Conversion to Multi‑Carbon Products

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Nano-Micro Letters 2025年第3期17卷 280-296页

作者： Chaoran Zhang Yichuan Gu Qu Jiang Ziyang Sheng Ruohan Feng Sihong Wang Haoyue Zhang Qianqing Xu Zijian Yuan Fang song State Key Laboratory of Metal Matrix Composites School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240People’s Republic of China

Structural reconstruction of electrocatalysts plays a pivotal role in catalytic performances for CO_(2)reduction reaction(CO_(2)RR),whereas the behavior is by far superficially ***,we report that CO_(2)accessibility results in a universal self-adaptive structural reconstruction from Cu_(2)O to Cu@CuxO composites,ending with feeding gas-dependent microstructures and catalytic *** CO_(2)-rich atmosphere favors reconstruction for CO_(2)RR,whereas the CO_(2)-deficient one prefers that for hydrogen evolution *** the assistance of spectroscopic analysis and theoretical calculations,we uncover a CO_(2)-induced passivation behavior by identifying a reductionresistant but catalytic active Cu(I)-rich amorphous layer stabilized by*CO ***,we find extra CO production is indispensable for the robust production of *** inverse correlation between durability and FECO/FEC2H4 is disclosed,suggesting that the selfstabilization process involving the absorption of*CO intermediates on Cu(I)sites is essential for durable *** by this insight,we design hollow Cu_(2)O nanospheres for durable and selective CO_(2)RR electrolysis in producing *** work recognizes the previously overlooked passivation reconstruction and self-stabilizing behavior and highlights the critical role of the local atmosphere in modulating reconstruction and catalytic processes.

关键词： CO_(2)reduction reaction Electrocatalysts Cu_(2)O Reconstruction Self-adaptive electrocatalysis

Investigations of an enclosed annular rotor-stator system with LES method

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Science China(Physics,Mechanics & Astronomy) 2018年第11期61卷 50-60页

作者： Zhe jiao song Fu School of Aerospace Engineering Tsinghua University

In this study, the flows in an enclosed annular rotor-stator system with the Reynolds number ranging from 0.75×105 to 3.75×105 and an aspect ratio of 36.5 are investigated using the LES method. Few studies have explored such a rotor-stator system with this aspect ratio and the flow structure on the rotor side. The mean flow structure varies from a torsional Couette type to a Batchelor type as the Reynolds number increases. The onset of the instability in the B?dewadt layer adjacent to the stator is delayed,whereas it is promoted in the Ekman layer adjacent to the rotor. Both the layers demonstrate rich spiral structures. Turbulent spirals are observed to occur at the rotor disk side that also generates TS-wave-like(Tollmien-Schlichting) structures between adjacent spiral arms. Further, the turbulence at the stator is complex and interesting. Statistically, the turbulence is highly anisotropic near both the rotating and nonrotating disks, which is depicted by the Reynolds stresses.

关键词： rotating flow rotor-stator system large eddy simulation anisotropic turbulence Ekman-B6dewadt layers

Mechanical properties and friction behaviors of CNT/AlSi_(10)Mg composites produced by spark plasma sintering

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International Journal of Minerals,Metallurgy and Materials 2017年第5期24卷 584-593页

作者： Lin-zhi Wang Ying Liu jiao-jiao Wu xi Zhang Chongqing Key Laboratory of Additive Manufacturing Technology and Systems Chongqing Institute of Green and Intelligent TechnologyChinese Academy of Sciences College of Material Science and Engineering Sichuan University College of Material Science and Engineering Southwest Jiaotong university

The mechanical properties and friction behaviors of CNT/AlSi10Mg composites produced by spark plasma sintering (SPS) were investigated. The results showed that the densities of the sintered composites gradually increased with increasing sintering temperature and that the highest microhardness and compressive strength were achieved in the specimen sintered at 450A degrees C. CNTs dispersed uniformly in the Al-Si10Mg matrix when the addition of CNTs was less than 1.5wt%. However, when the addition of CNTs exceeded 1.5wt%, the aggregation of CNTs was clearly observed. Moreover, the mechanical properties (including the densities, compressive strength, and microhardness) of the composites changed with CNT content and reached a maximum value when the CNT content was 1.5wt%. Meanwhile, the minimum average friction coefficient and wear rate of the CNT/AlSi10Mg composites were obtained with 1.0wt% CNTs.

关键词： metal matrix composites carbon nanotubes (CNTs) aluminum silicon magnesium alloys spark plasma sintering mechanical properties friction

QTL-seq analysis of the seed size trait in grape provides new molecular insights on seedlessness

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Journal of Integrative Agriculture 2022年第10期21卷 2910-2925页

作者： WANG Li ZHANG song-lin jiao Chen LI Zhi LIU Chong-huai WANG xi-ping State Key Laboratory of Crop Stress Biology in Arid Areas/College of Horticulture Northwest A&F UniversityYangling 712100P.R.China College of Horticulture Hebei Agricultural UniversityBaoding 071001P.R.China Zhengzhou Fruit Research Institute Chinese Academy of Agricultural SciencesZhengzhou 450000P.R.China Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China of Ministry of Agriculture and Rural Affairs Northwest A&F UniversityYangling 712100P.R.China

Seedlessness in grape(Vitis vinifera)is an important commercial trait for both the fresh and drying ***,despite numerous studies,the mechanisms and key genes regulating grape seedlessness are mostly *** this study,we sequenced the genomes of the *** seeded cultivar‘Red Globe’,the seedless cultivar‘Centennial Seedless’,and the derived *** single nucleotide polymorphisms(SNPs)were identified by genome sequencing and analyzed using published transcriptome *** SNPs occurred in genes related to seed development,which were identified as protein kinases,transcription factors,and cytochrome P450 s and showed differential expression during ovule development in both seeded and seedless *** nonsynonymous SNP-associated genes were mainly involved in biological processes such as hormone balance,seed coat and endosperm development,reproductive organ development,oxidation and reduction,senescence and cell death.A potential quantitative trait locus(QTL)region associated with seed size was characterized based on the SNP-index,and expression analysis of candidate genes in the QTL region during ovule development in multiple seeded and seedless grape cultivars were *** SNPs were further subjected to SNa Pshot analysis and one SNP in G8 showed 67.5%efficiency in the grape progeny ***,the data obtained in this study shed light on the differences in seed development between seeded and seedless progeny at the genomic level,which provides valuable resources for future functional studies and grape breeding.

关键词： grape genome QTL-seq seedless SNP

Fatigue small crack growth threshold determination of a high-Nb TiAl alloy at different temperatures by in-situ observation

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International Journal of Minerals,Metallurgy and Materials 2013年第12期20卷 1192-1197页

作者： Min Zhang xi-ping song Long Yu Hong-liang Li Ze-hui jiao Hui-chen Yu State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing Testing Research Center for Aeronautical Materials Beijing Institute of Aeronautical Materials

The purpose of this paper is to estimate the fatigue crack growth threshold of a high-Nb TiAl alloy at the different temperatures based on scanning electron microscopy （SEM） in-situ observation. The results indicated that the fatigue crack growth threshold △Kth of a nearly lamellar high-Nb TiAl alloy with 8% Nb content at room temperature and 750℃ was determined as 12.89 MPa.m^1/2 and 8.69 MPa.m^1/2, respectively. The effect of the elevated temperature on the fatigue crack growth threshold cannot be ignored. At the same time, the early stage of fatigue crack propagation exhibited multicrack initiation and bridge-link behavior.

关键词： titanium aluminum alloys niobium fatigue crack propagation high temperature testing