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Journal of Integrative Agriculture 2024年第9期23卷 2898-2910页

作者： Chengwei Huang Zhijuan Ji Qianqian Huang Liling Peng Wenwen Li Dandan Wang zepeng wu Jia Zhao Yongqi He Zhoufei Wang Laboratory of Seed Science and Technology/Guangdong Key Laboratory of Plant Molecular Breeding/State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources/South China Agricultural University Guangzhou 510642China National Nanfan Research Institute(Sanya) Chinese Academy of Agricultural SciencesSanya 572025 China National Rice Research Institute Hangzhou 310006China

Seed vigor is a crucial trait for the direct seeding of *** we examined the genetic regulation of seed vigor traits in rice,including germination index(GI)and germination potential(GP),using a genome-wide association study *** major quantitative trait locus,qGI6/qGP6,was identified simultaneously for both GI and *** candidate gene encoding the cytochrome c oxidase subunit 5B(OsCOX5B)was validated for qGI6/*** disruption of OsCOX5B caused the vigor traits to be significantly lower in Oscox5b mutants than in the japonica Nipponbare wild type(WT).Gene co-expression analysis revealed that OsCOX5B influences seed vigor mainly by modulating the tricarboxylic acid cycle *** glucose levels were significantly higher while the pyruvic acid and adenosine triphosphate levels were significantly lower in Oscox5b mutants than in WT during seed *** elite haplotype of OsCOX5B facilitates seed vigor by increasing its expression during seed ***,we propose that OsCOX5B is a potential target for the breeding of rice varieties with enhanced seed vigor for direct seeding.

关键词： cytochrome c oxidase natural variation rice seed vigor

装配式混凝土结构灌浆连接质量检测的仿真研究分析

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广东建材 2024年第6期40卷 60-64页

作者：吴泽鹏广东省建设工程质量安全检测总站有限公司

本文利用ABAQUS模拟不同工况,分析冲击应力波在不同工况中的传播规律和响应情况,检测管道缺陷的埋置深度,揭示钢筋、钢筋束等因素对浆锚连接体系灌浆质量的影响规律。结果表明:应力波在混凝土中呈对称传播规律;波纹管尺寸越大,缺陷反映... 详细信息

本文利用ABAQUS模拟不同工况,分析冲击应力波在不同工况中的传播规律和响应情况,检测管道缺陷的埋置深度,揭示钢筋、钢筋束等因素对浆锚连接体系灌浆质量的影响规律。结果表明:应力波在混凝土中呈对称传播规律;波纹管尺寸越大,缺陷反映越明显;混凝土强度等级不会对灌浆质量检测结果产生影响;塑料材质管道的检测结果没有金属材质管道的检测结果准确度高;可以忽略单根钢筋对检测结果的影响,但钢筋束直径较大,情况复杂,钢筋束位置不易确定。

关键词：有限元分析混凝土结构,缺陷检测,冲击回波法

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碳点基电致发光器件研究进展

发光学报 2024年第8期45卷 1247-1265页

作者：禹珍珍任正李琮武泽芃王大伟关丽李旭河北大学物理科学与技术学院河北省光电信息材料重点实验室河北保定071002 河北利福光电技术有限公司河北省半导体照明与显示关键材料重点实验室河北保定071000

荧光碳点(CDs)具有原料广泛、无毒无污染、发光颜色可调、低成本和生物相容性等优异特点,在发光领域具有广阔的应用前景。近年来,基于CDs的电致发光器件已经取得了不错的成就。本文总结了基于CDs的电致发光器件的最新进展,并且重点论述... 详细信息

荧光碳点(CDs)具有原料广泛、无毒无污染、发光颜色可调、低成本和生物相容性等优异特点,在发光领域具有广阔的应用前景。近年来,基于CDs的电致发光器件已经取得了不错的成就。本文总结了基于CDs的电致发光器件的最新进展,并且重点论述了合成高效CDs和调控器件结构以获得高性能器件的可行性策略。此外,结合CDs在电致发光器件应用中的发展现状以及未来需求分析,本文对实现高性能CDs基电致发光器件进行了展望。

关键词：碳点电致发光发光二极管(LED) 性能全溶液

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Cross section measurement for the^(232)Th(n,f)reaction in the 4.50−5.40 MeV region using a time projection chamber

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Chinese Physics C 2024年第10期48卷 157-167页

作者： Haofan Bai Han Yi Yankun Sun Yiwei Hu Jie Liu zepeng wu Cong Xia Wenkai Ren Wentian Cao Tieshuan Fan Guohui Zhang Ruirui Fan Yang Li Wei Jiang Yonghao Chen You Lv Changjun Ning Weihua Jia Zhiyong Zhang Haolei Chen Zhen Chen Maoyuan Zhao Changqing Feng Shubin Liu State Key Laboratory of Nuclear Physics and Technology Institute of Heavy Ion PhysicsPeking UniversityBeijing 100871China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Spallation Neutron Source Science Center Dongguan 523803China National Key Laboratory of Intense Pulsed Radiation Simulation and Effect Northwest Institute of Nuclear TechnologyXi'an 710024China Department of Nuclear Science and Technology School of Energy and Power EngineeringXi’an Jiaotong UniversityXi’an 710049China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China

Accurate cross sections of neutron induced fission reactions are required in the design of advanced nuclear systems and the development of fission *** projection chambers(TPCs),with their track reconstruction and particle identification capabilities,are considered the best detectors for high-precision fission cross section *** TPC developed by the back-streaming white neutron source(Back-n)team of the China Spallation Neutron Source(CSNS)was used as the fission fragment detector in *** this study,the cross sections of the ^(232)Th(n,f)reaction at five neutron energies in the 4.50−5.40 MeV region were *** fission fragments and α particles were well identified using our TPC,which led to a higher detection efficiency of the fission fragments and smaller uncertainty of the measured cross *** is the first measurement of the ^(232)Th(n,f)reaction using a TPC for the detection of fission *** uncertainties less than 5%,our cross sections are consistent with the data in different evaluation libraries,including JENDL-4.0,ROSFOND-2010,CENDL-3.2,ENDF/B-VⅢ.0,and BROND-3.1,whose uncertainties can be reduced after future improvement of the measurement.

关键词： ^(232)Th(n,f)fission cross section time projection chamber(TPC) ^(232)Th

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广域空间感知敏感器光学系统设计

光子学报 2024年第3期53卷 219-231页

作者：杜伟峰王燕清郑循江孙少勇毛晓楠曲耀斌吴泽鹏上海航天控制技术研究所上海201109 上海卫星工程研究所上海201109

根据空间感知任务的特殊应用需求,开展了光电系统技术指标论证,完成了光学系统设计和性能测试。光学系统全视场设计值为60°,F数为3.0,主光线在像面的入射角为8°。光学系统采用低灵敏公差优化设计方案,并在公差分析时提出以离焦方式补... 详细信息

根据空间感知任务的特殊应用需求,开展了光电系统技术指标论证,完成了光学系统设计和性能测试。光学系统全视场设计值为60°,F数为3.0,主光线在像面的入射角为8°。光学系统采用低灵敏公差优化设计方案,并在公差分析时提出以离焦方式补偿点目标与面目标的MTF,使之在50 lp/mm处不小于0.4。采用传函仪对装配后的镜头进行指标检测:13.5μm弥散斑直径内星点能量集中度达到90%以上;点目标MTF在50 lp/mm处不小于0.55,15 m处的面目标在同样的分辨率处MTF不小于0.48;视场边缘相对中心的照度达到72%;全视场的畸变小于-0.58%;倍率色差绝对值为1.53μm。外场观星测试表明,光机系统测试灵敏度为6.4 Mv,单独头部测角精度均值为0.7″,3σ置信区间为2″~3″。

关键词：电子轰击有源像素传感器光学设计低灵敏度公差优化镜头检测

回火处理对05Cr17Ni4Cu4Nb钢性能及晶间腐蚀敏感性的影响

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金属热处理 2024年第9期49卷 144-151页

作者：刘煜高宇昊刘晓勇罗先甫王佳孙绪鲁吴泽鹏中国船舶集团有限公司第七二五研究所河南洛阳471023 洛阳船舶材料研究所海洋腐蚀与防护全国重点实验室河南洛阳471023

利用金相显微镜、扫描电镜、透射电镜、硬度及冲击试验等手段,观察和测试05Cr17Ni4Cu4Nb马氏体不锈钢的组织和性能,通过晶间腐蚀试验研究了回火处理对其晶间腐蚀敏感性的影响。结果表明,经650℃×2 h回火处理后,固溶时效态05Cr17Ni4Cu4N... 详细信息

利用金相显微镜、扫描电镜、透射电镜、硬度及冲击试验等手段,观察和测试05Cr17Ni4Cu4Nb马氏体不锈钢的组织和性能,通过晶间腐蚀试验研究了回火处理对其晶间腐蚀敏感性的影响。结果表明,经650℃×2 h回火处理后,固溶时效态05Cr17Ni4Cu4Nb沉淀硬化不锈钢中含Cu弥散强化相密度降低,尺寸增大,逆变奥氏体相沿原奥氏体相及原马氏体板条界处生成并长大,含Cr碳化物分解,Cr元素偏聚析出形成了条状析出相,但分布更为均匀,导致钢的强度降低,韧性提高,并且由于弥补了原贫Cr区的Cr元素,材料的晶间腐蚀敏感性降低。

关键词：回火处理 05Cr17Ni4Cu4Nb马氏体不锈钢晶间腐蚀组织性能

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雷州半岛桉树无性系生态调节服务价值核算

桉树科技 2024年第2期41卷 82-90页

作者：杨永忠付建生吴泽鹏李俊西南林业大学云南昆明650000 广东省林业科学研究院广东广州510700 中林(广东)林业发展有限公司广东广州510700 中林集团雷州林业局有限公司广东湛江524043

以雷州半岛4种桉树无性系作为研究对象,采用分布式测算评估体系方法从4个功能8个指标系统评估桉树不同无性系调节服务价值并对森林生态系统当期所提供的服务流量进行核算,以期为当地森林生态价值的实现提供一定参考。结果表明:2023年雷... 详细信息

以雷州半岛4种桉树无性系作为研究对象,采用分布式测算评估体系方法从4个功能8个指标系统评估桉树不同无性系调节服务价值并对森林生态系统当期所提供的服务流量进行核算,以期为当地森林生态价值的实现提供一定参考。结果表明:2023年雷州半岛桉树不同无性系调节服务总价值为3.32×10^(9)元·年^(-1)。涵养水源、固碳释氧、净化大气环境、森林防护价值分别为1.22×10^(9)、1.93×10^(9)、1.16×10^(8)、5.79×10^(7)元·年^(-1),分别占比为36.80%、57.95%、3.50%、1.75%,固碳释氧及涵养水源价值是雷州半岛桉树不同无性系调节服务的主要价值。尾细桉、尾巨桉、尾叶桉、巨尾桉调节服务价值量分别为2.30×10^(9)、8.35×10^(8)、9.23×10^(7)、9.27×10^(7)元·年^(-1),分别占比为69.31%、25.13%、2.78%、2.79%。

关键词：桉树无性系生态调节服务价值核算雷州半岛

Self-reinforced Calcium Phosphate Cement Inspired by Sea Cucumber Dermis

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Journal of wuhan University of Technology(Materials Science) 2024年第3期39卷 682-688页

作者：吴治文 WANG Zihao CAI zepeng QU Liting 于涛 College of Chemistry and Materials Science Jinan UniversityGuangzhou 510632China Guangdong Provincial Key Laboratory of Spine and Spinal Cord Reconstruction The Fifth Affiliated Hospital(Heyuan Shenhe People’s Hospital)Jinan UniversityHeyuan 517000China

A composite bone cement based onα-TCP with self-reinforcing characteristics is prepared by compounding cellulose whiskers and polyvinyl alcohol in different *** this system,we are inspired by the sea cucumber,which can alter the stiffness of their inner dermis *** the formation of hydrogen bonds between the hydroxyl groups on the cellulose whiskers and PVA,the bone cement matrix can be strengthened during the curing process of *** the process of bone cement blending,there is more water,the hydrogen bond connection is destroyed,so the slurry has better fluidity at this *** the hydration of the bone cement progresses,the reduction of the water phase leads to the formation of a permeable network structure of hydrogen bond connections between the *** dual-phase action of PVA and whiskers greatly increases the mechanical strength of the bone cement system(5.5 to 23.8 MPa),while the presence of polyvinyl alcohol improves the toughness of the bone cement *** work was supposed to explore whether the chemoresponsive materials can be adapted to biomedical materials,for example,bone repair.

关键词： bone repair self-reinforce chemoresponsive hydrogen bond

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

Dynamics of an impurity ion transport in oil-paper insulation under various electric fields

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High Voltage 2024年第1期9卷 66-80页

作者： Yuanyang Ren Yang Wang Qiankai Zhang Jiayu Xiong Wen Cao zepeng Lv Kai wu State Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong UniversityXi'anChina School of Electronics and Information Xi'an Polytechnic UniversityXi'anChina State Grid Sichuan Electric Power Research Institute ChengduChina

The ionic transport process is an important counterpart to charge transport in oil-paper insulation,and it significantly impacts oil flow electrification at the oil-paper *** this,the dynamics of this phenomenon and the underlying mechanisms remain unclear,particularly at the molecular *** understand this fundamental aspect,we conduct Molecular Dynamics study on the transport behaviour of an impurity ion in different oil-paper insulation models under various external electric *** influence factors,such as external electric fields,temperatures,and local structural characteristics,are investigated in relation to the corresponding ionic mobility in different polymer *** to the simulations,ionic mobility and its response to electric fields are higher in weaker electrostatic *** a result,mineral oil exhibits the highest ionic mobility and the most substantial enhancement of ionic mobility by external electric fields,followed by vegetable oil,oil-paper blends,and insulating *** significant deviation in ionic mobility between oil and paper leads to the formation of an electric double layer near the oil-paper *** underlying physical mechanisms of different ionic mobility and its response to the electric field in different polymer models could be explained by the different polymer structural influences in terms of interaction energy and coordination numbers in a static manner,as well as by the interactions between the impurity ion and its surrounding atoms in terms of lifetime correlation functions and velocity autocorrelation functions in a dynamic *** addition,the influence of temperature on ionic mobility in mineral and vegetable oil is examined,and their activation energies are *** in the fundamental understanding of the dynamics of the ion transport process in oil-paper insulation is vital to improving their insulating properties for oil-impregnated power transformers.

关键词： insulation transport fields