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Tungsten 2025年第1期7卷 32-49页

作者： Li-Rong Xiao Chen Chen Shuo Wang Zi-Yin Dai Hideo Kimura Cui Ni Chuan-Xin Hou Xue-Qin Sun Si-Jie Guo Wei du Xiu-Bo Xie School of Environmental and Material Engineering Yantai University Bosch HUAYU Steering Systems (Yantai) Co. Ltd.Ytp/MFE University of Tennessee Knoxville Shandong Key Laboratory of Eco-Environmental Science for the Yellow River Delta Shandong University of Aeronautics

MgH2is considered as a promising hydrogen storage material for its high hydrogen storage capacity,low cost and abundant resource ***,the low kinetics and high enthalpy formation of MgH2limit its wide *** the perspective of adding catalysts to enhance the hydrogen storage properties of Mg-MgH2,this article elaborated the main catalysts based on Ti and Nb transition elements,including single oxide catalysts,binary oxides catalysts（combined with Ni,Na,Sr,V,etc.）,multiple catalysts bound to carbon,and composite catalysts with Ti and Nb elements combined with MXene ***,the main pathways of various catalysts to reduce the reaction activity and broaden the hydrogen desorption channel were also *** Ti-based catalysts can enhance the reactive sites of the matrix by forming multivalent states,while Nb-based catalysts broaden the hydrogen reaction channels by forming tiny *** improving the size structure and enhancing the grain size stability,combined with carbon materials should be the future considerations.

关键词： Catalysts Mg-based hydrogen storage alloys Solid hydrogen storage Transition metal elements

红眼白水貂FSHβ和NCOA1基因多态性及其与繁殖性状的相关分析

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中国畜牧兽医 2018年第2期45卷 429-438页

作者：霍自双刘宗岳岳志刚杜智恒丛波刘琳玲杨福合孙余卓白秀娟东北农业大学动物科学技术学院哈尔滨150030 中国农业科学院特产研究所特种经济动物分子生物学国家重点实验室农业部特种经济动物遗传育种与繁殖重点实验室长春130112 鄂尔多斯市农畜产品质量安全中心鄂尔多斯010321

本研究旨在检测红眼白水貂促卵泡激素β(follicle-stimulating hormone beta subunit,FSHβ)和核受体辅激活蛋白1(nuclear receptor coactivator 1,NCOA1)基因多态性与繁殖性状的关系。采用单链构象多态性(SSCP)和DNA测序相结合的方法... 详细信息

本研究旨在检测红眼白水貂促卵泡激素β(follicle-stimulating hormone beta subunit,FSHβ)和核受体辅激活蛋白1(nuclear receptor coactivator 1,NCOA1)基因多态性与繁殖性状的关系。采用单链构象多态性(SSCP)和DNA测序相结合的方法检测了红眼白水貂215个个体的单核苷酸多态性,针对红眼白水貂群体的特点建立合适的统计分析模型,利用SAS 9.4统计软件对候选基因进行多态性分析,并采用最小二乘法分析了总产仔数和产活仔数的遗传效应。结果表明,在红眼白水貂FSHβ基因上存在2个多态位点,分别为内含子1处的g.1228G>A突变和外显子2处的g.1866T>C突变;在NCOA1基因上存在1个多态位点,为第6外显子处g.151536T>C突变。在红眼白水貂群体中,FSHβ基因的优势基因为B等位基因,NCOA1基因的优势基因为A等位基因;FSHβ基因g.1228G>A位点的AA和AB基因型个体在总产仔数、产活仔数上均极显著高于BB基因型(PC位点在总产仔数和产活仔数上呈现BB>AB>AA的趋势;NCOA1基因的AB基因型个体的总产仔数和产活仔数均极显著高于AA基因型(PC与g.1228G>A的合并基因型对繁殖性状有显著影响(P<0.05)。因此,可以利用以上突变位点对红眼白水貂的繁殖性状进行标记辅助选择研究。

关键词：红眼白水貂繁殖性状单核苷酸多态性 FSHβ基因 NCOA1基因

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宋孝宗朝崇苏文风之形成与苏文的传播

海南大学学报（人文社会科学版） 2025年第1期43卷 36-42页

作者：杜昭郑州大学文学院河南郑州450001

孝宗朝由于孝宗皇帝崇苏轼“立天下之大节”,雄视百代,为“一代文章之宗”,故多方推广苏轼文学,采取一系列举措,从而深刻影响了当时的太学文风,也提升了士人尊苏崇苏的热度。孝宗朝将苏轼文学传播从困境中解脱出来,使得“淳熙中,崇苏氏... 详细信息

孝宗朝由于孝宗皇帝崇苏轼“立天下之大节”,雄视百代,为“一代文章之宗”,故多方推广苏轼文学,采取一系列举措,从而深刻影响了当时的太学文风,也提升了士人尊苏崇苏的热度。孝宗朝将苏轼文学传播从困境中解脱出来,使得“淳熙中,崇苏氏”成为一种社会倾向,同时,也为元明清三代以至于今日的苏轼文学传播奠定了良好基础。而孝宗朝的崇苏又有其更深远的意义,在于延及世人对三苏家教家风的更多关注与研究。

关键词：宋孝宗崇苏苏轼文学传播

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Strategies for achieving fast-charge and high-voltage polymer-based solid-state lithium metal batteries

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Science China Chemistry 2025年

作者： Zitian Lin Sucheng Liu Ce Cui Wuhua Liu Yufeng Su Huiyu Song Li du Jianqiang Hu Zhiming Cui Guangdong Provincial Key Laboratory of Fuel Cell Technology School of Chemistry and Chemical Engineering South China University of Technology

Solid-state polymer electrolytes hold the potential for market application due to the combination of advantageous properties,such as flexibility,ease of processing and low ***,the sluggish ion transport and poor high-voltage stability pose significant challenges for the practical application of polymer-based solid-state lithium metal batteries (SSLMBs).Therefore,the design and development of polymer-based SSLMBs toward fast-charge and high-voltage is of great significance in high-energydensity ***,this review deeply analyzes the mechanism of ion transport and anti-oxidation of polymer-based solidstate ***,we also systematically and comprehensively summarize the factors that affect ionic conductivity and the electrochemical ***,we outline the solution strategies for simultaneously enhancing both ionic conductivity and high-voltage ***,we discuss the main challenges and the future prospects of polymer-based SSLMBs for further *** is hoped that this review can provide both advances and fundamentals to the research community and pave the way for the development of SSLMBs

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Liquid refractive index measurement method based on orthogonal polarization laser self-mixing interference

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Optoelectronics Letters 2025年

作者： ZHAO Yan WANG Haipeng du Shengzhi TONG Jigang KANG Jun School of Electrical Engineering and Automation， Tianjin University of Technology Tianjin Key Laboratory for Control Theory and Applications in Complicated Systems Department of Electrical Engineering， Tshwane University of Technology

In this paper， a novel method combining orthogonal polarization laser self-mixing interference is proposed. The method utilizes a rotating cuvette to measure the refractive index of liquids at different concentrations. The cuvette is filled with the liquid to be measured and rotated by a certain angle. The change in the number of interference fringes， caused by comparing an empty cuvette with a liquid-filled cuvette， is used to calculate the refractive index of the liquid. A four-fold logic subdivision algorithm is then used to improve measurement resolution. The experimental results show that for pure water and different NaCl and glucose solutions concentrations， the average relative errors are 0.47%， 0.59%， and 2.17%， respectively， with the maximum relative error within ±2.54%. The standard deviation of all solutions is less than 3.4%.

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The low-latitude sodium layer:comparative data from lidar observations at Hainan,China and São Paulo,Brazil

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Earth and Planetary Physics 2025年第1期9卷 39-53页

作者： Fang Wu Jing Jiao GuoTao Yang LiFang du ZhengKuan Liu HaoRan Zheng JiXin Guo ShaoHua Gong YaJun Zhu State Key Laboratory of Space Weather National Space Science CenterChinese Academy of SciencesBeijing 100190China Hainan National Field Science Observation and Research Observatory for Space Weather National Space Science CenterChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China China-Brazil Joint Laboratory for Space Weather NSSC/INPESão Josédos Campos 12227-010Brazil School of Physics and Electronics Engineering Hainan Normal UniversityHaikou 571158China

Physical and chemical processes observed in the mesosphere and thermosphere above the Earth’s low latitudes are complex and highly interrelated to activity in the low-latitude *** sodium detected by lidar can yield clues to dynamic and chemical processes in these spatial layers above the Earth’s *** paper is based on sodium layer data collected at two low-latitude stations,one in the northern hemisphere and one in the *** low-latitude sodium layer exhibits conspicuous seasonal variations in shape,density,and altitude;these variations are similar between Earth’s hemispheres:sodium layer density at both stations reaches its seasonal maximum in autumn and minimum in ***,maximal Na density over Brazil is greater than that over *** variations of Na density above the two low-latitude stations are also similar;at both,maxima are observed before *** variations of the Na layer over Brazil that differ from those observed in the northern hemisphere may be related to the South Atlantic Magnetic Anomaly(SAMA)or fountain *** suggest that low-latitude Na layer data may provide useful additional evidence that could significantly improve the low-latitude part of the WACCM-Na model.

关键词： metallic sodium layer seasonal variation nocturnal variation lidar

格陵兰NEEM冰芯1711~1969年火山事件重建

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第四纪研究 2021年第3期41卷 726-738页

作者：杜志恒 Soon Do Hur 效存德杨佼林佳梅 Yeongcheol Han 张通李传金任贾文王士猛 Seong Joon Jun Sang Bum Hong Khanghyun Lee 中国科学院西北生态环境资源研究院冰冻圈科学国家重点实验室甘肃兰州730000 Korea Polar Research Institute Incheon 21990Korea 北京师范大学地表过程与资源生态国家重点实验室北京100875 Physics of Ice Climate and EarthNiels Bohr InstituteUniverisity of CopenhagenCopenhagen N 2200Denmark

冰芯作为良好的地质载体,为第四纪气候和环境研究提供了详实的信息。本研究利用连续流动装置对格陵兰冰盖西北部获取的一支90 m浅冰芯(命名为NEEM2009S1:77.45°N,51.06°W;海拔高度2450 m)融化处理,对氧和氢同位素比率(δ^(18)O和δD,2... 详细信息

冰芯作为良好的地质载体,为第四纪气候和环境研究提供了详实的信息。本研究利用连续流动装置对格陵兰冰盖西北部获取的一支90 m浅冰芯(命名为NEEM2009S1:77.45°N,51.06°W;海拔高度2450 m)融化处理,对氧和氢同位素比率(δ^(18)O和δD,2 cm分辨率)和硫酸根离子浓度(SO_(4)^(2-),10~12 cm分辨率)进行了测试。基于δ^(18)O和关键的强火山事件对该冰芯进行了定年,结果为1711~1969年(不确定性为±1年);通过非海盐硫酸根离子浓度(nss SO_(4)^(2-))重建了该冰芯过去1711~1969年期间火山事件的历史。SO_(4)^(2-)浓度和通量很好地揭示了不同强度大小的火山事件。评估了强火山事件(VEI≥5)其产生的气候制冷效应;同时,由于该冰芯距离冰岛较近,本研究重点讨论了该冰芯对冰岛火山事件的记录历史,数据结果对了解冰岛历史时期火山信息具有重要的意义;此外,低纬度东亚与阿拉斯加地区的火山也容易传输至格陵兰冰盖。重建结果对于更好的理解火山事件对区域、全球环境与气候的影响具有重要的参考价值。

关键词：格陵兰冰盖 NEEM冰芯火山事件冰岛气候效应

Accurate estimation of line-of-sight rate under strong impact interference effect

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Journal of Systems Engineering and Electronics 2020年第6期31卷 1262-1273页

作者： ZHOU Di HU zhiheng ZHANG Wenxue School of Astronautics Harbin Institute of TechnologyHarbin 150001China

In the process of the terminal guidance of a kinetic kill vehicle(KKV),it is very important to accurately estimate the lineof-sight(LOS)rate via the measurements of a target seeker onboard the *** strong impact interference caused by the large lateral thrust produced by the thrusters on the KKV is a main factor that affects the measurements on the LOS angle.A method to estimate the impact interference and the LOS rate together via a Kalman filter is proposed to improve the estimation precision of the LOS *** observability of the system describing the missile-target relative motion model and the impact interference model is proved,and then a Kalman filter is *** the Kalman filter design,the continuous-discrete and two-stage filtering techniques are used because the system model is time-variant and *** simulation results show that by estimating the impact interference,the estimation precision of the LOS rate is increased,and so the miss distance of the KKV under the strong impact interference is *** proposed continuous-discrete two-stage Kalman filter shows higher estimation precision and lower computational cost than the naive discrete augmented state Kalman filter.

关键词： guidance impact interference linear time-variant system observability continuous-discrete Kalman filter twostage Kalman filter

Parametric shape prior model used in image segmentation

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Journal of Systems Engineering and Electronics 2016年第5期27卷 1115-1121页

作者： zhiheng zhou ming dai huiqiang zhong College of Electronics and Information Engineering South China University of Technology Guangzhou 510640 China

due to the frequency of occlusion, cluttering and lowcontrast edges, gray intensity based active contour models oftenfail to segment meaningful objects. Prior shape information is usuallyutilized to segment desirable objects. A parametric shape priormodel is proposed. Firstly, principal component analysis is employedto train object shape and transformation is added to shaperepresentation. Then the energy function is constructed througha combination of shape prior energy, gray intensity energy andshape constraint energy of the kernel density function. The objectboundary extraction process is converted into the parameters solvingprocess of object shape. Besides, two new shape prior energyfunctions are defined when desirable objects are occluded by otherobjects or some parts of them are missing. Finally, an alternatingdecent iteration solving scheme is proposed for numerical *** on synthetic and real images demonstratethe robustness and accuracy of the proposed method.

关键词： image segmentation shape prior principal componentanalysis kernel density function.

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基于声发射的木材裂缝数量辨识研究

森林工程 2025年第1期41卷 59-66页

作者：张志恒李明沈志辉陈楚敏方赛银杜坤杨龙飞邓婷婷西南林业大学机械与交通学院昆明650224 安徽工程大学高端装备先进感知与智能控制教育部重点实验室安徽芜湖241000 安徽工程大学电气工程学院安徽芜湖241000

针对木材裂缝缺陷,提出一种基于声发射的木材裂缝数量识别方法。首先,在试件上人为依次制作1 mm×9 mm(长×高)的4条裂缝,在裂缝的一侧通过折铅的方式产生声发射(acoustic emission,AE)信号,另一侧放置传感器,信号采样频率设置为2 MHz... 详细信息

针对木材裂缝缺陷,提出一种基于声发射的木材裂缝数量识别方法。首先,在试件上人为依次制作1 mm×9 mm(长×高)的4条裂缝,在裂缝的一侧通过折铅的方式产生声发射(acoustic emission,AE)信号,另一侧放置传感器,信号采样频率设置为2 MHz。然后,通过粒子群算法(particle swarm optimization,PSO)确定变分模态分解(variational mode decoposition,VMD)的分解层数K和惩罚因子α,并将原始信号分解为具有不同频率的本征模态(intrinsic mode function,IMF)。接着,随机选择5组信号进行VMD分解,并对分解后的IMF构成的矩阵进行奇异值分解(singular value decomposition,SVD),得到相应的奇异值向量,再由5组奇异值向量组成标准矩阵。最后,由测得的AE信号,分别与标准矩阵计算马氏距离,并依据最小判别原则,判定裂缝数量。结果表明,PSO-VMD-SVD方法能够方便提取出AE信号特征,并通过计算马氏距离进行裂缝数量判别,判别正确率为92%。

关键词：声发射变分模态分解奇异值分解马氏距离木材裂缝缺陷