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Progress in Natural Science:Materials International 2014年第5期24卷 472-478页

作者： Xuan Li chao Guo Xiaokai Liu Lei Liu Jing Bai Feng Xue Pinghua Lin Chenglin chu School of Materials Science and Engineering and Jiangsu Key Laboratory for Advanced Metallic Materials Southeast University

A novel poly-lactic acid(PLA) based biocomposite reinforced with unidirectional high-strength magnesium alloy(Mg-alloy) wires for bone fracture fixation was fabricated by hot-compressing process. The macroscopical and microscopical impact behaviors of the biocomposite were investigated using impact experiments and finite element method(FEM), respectively. The results indicated that the biocomposite had favorable impact properties due to the plastic deformation behavior of Mg-alloy wires during impact process. While the content of Mg-alloy wires reached20 vol%, the impact strength of the composite could achieve 93.4 k J/m2, which is approximate 16 times larger than that of pure PLA fabricated by the same process. According to FEM simulation results, the complete destruction life of the composites during impact process increased with increasing volume fraction of Mg-alloy wires, indicating a high impact-bearing ability of the composite for bone fracture ***, the energy absorbed by Mg-alloy wires in the composites had a corresponding increase. In addition, it denoted that the impact properties of the composites are sensitive to the initial properties of the matrix material.

关键词： Impact property Magnesium alloy wire Poly-lactic acid Composite FEM

A Three-Dimensional (3D) Environment to Maintain the Integrity of Mouse Testicular Can Cause the Occurrence of Meiosis

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Journal of Integrative Agriculture 2013年第8期12卷 1481-1488页

作者： chu Zhi-li LIU chao BAI Yao-fu ZHU Hai-jing HU Yue HUA Jin-lian College of Veterinary Medicine Shaanxi Center of Stem Cells Engineering & Technology/Key Lab for Animal BiotechnologyMinistry of Agriculture/Northwest A&F University

Adhesions between different cells and extracellular matrix have been studied extensively in vitro, but little is known about their functions in testicular tissue counterparts. Spermatogonia and their companion somatic cells maintain a close association throughout spermatogenesis and this association is necessary for normal spermatogenesis. In order to keep the relative integrity of the testicular tissues, and to detect the development in vitro, culture testicular tissues in a three- dimensional （3D） agarose matrix was examined. Testicular tissues isolated from 6.5 d postpartum （dpp） mouse were cultured on the top of the matrix for 26 d with a medium height up to 4/5 of the 3D agarose matrix. The results showed that in this 3D culture environment, each type of testicular cells kept the same structure, localization and function as in vivo and might be more biologically relevant to living organisms. After culture, germ cell marker VASA and meiosis markers DAZL and SCP3 showed typical positive analysed by immunofluorescence staining and RT-PCR. It demonstrated that this 3D culture system was able to maintain the number of germ cells and promote the meiosis initiation of male germ cells.

关键词： three-dimensional culture (3D) meiosis organ culture mouse

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电动拖拉机底盘轻量化设计

农机化研究 2025年第2期47卷 222-227页

作者：赵南南楚晓杏河南机电职业学院汽车工程学院郑州451191

探讨了电动拖拉机底盘轻量化设计的方法和技术,并基于底盘轻量化的重要性论述了底盘轻量化的具体方法,包括选材、结构优化、工艺改进等方面。针对电动拖拉机的工作特点,提出了适合其底盘轻量化的具体措施,包括采用高强度轻质材料、减少... 详细信息

探讨了电动拖拉机底盘轻量化设计的方法和技术,并基于底盘轻量化的重要性论述了底盘轻量化的具体方法,包括选材、结构优化、工艺改进等方面。针对电动拖拉机的工作特点,提出了适合其底盘轻量化的具体措施,包括采用高强度轻质材料、减少焊接点及优化桥座结构等。最后,通过数值模拟和试验验证了轻量化设计的效果,证明了方法的可行性和有效性。研究成果对于提高电动拖拉机的性能和节能减排具有重要意义。

关键词：电动拖拉机底盘轻量化结构优化

功函促进钼基异质结电催化剂的电子结构重整提升其析氢反应活性（英文）

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Science China Materials 2025年第1期 189-198页

作者：陈想冯帅谢松苗亚萍高标张旭明黄莉李筠 Paul K.chu 彭祥 Hubei Key Laboratory of Plasma Chemistry and Advanced Materials Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education School of Materials Science and Engineering Wuhan Institute of Technology School of Textile Science and Engineering Xi'an Polytechnic University The State Key Laboratory of Refractories and Metallurgy Institute of Advanced Materials and Nanotechnology Wuhan University of Science and Technology Guizhou Wujiang Hydropower Development Co. Ltd. Department of Physics Department of Materials Science and Engineering and Department of Biomedical Engineering City University of Hong Kong

Mo基催化剂在电催化析氢反应（HER）中具有巨大应用潜力.然而,其活性位点的暴露不足、极强的氢吸附能力导致其催化性能未能充分体现.本文在碳布上构筑了Mo2N–MoSe2异质结（MNS）,以增强Mo基催化剂的HER活性.由于MNS中的Mo2N具有较低的...

Mo基催化剂在电催化析氢反应（HER）中具有巨大应用潜力.然而,其活性位点的暴露不足、极强的氢吸附能力导致其催化性能未能充分体现.本文在碳布上构筑了Mo2N–MoSe2异质结（MNS）,以增强Mo基催化剂的HER活性.由于MNS中的Mo2N具有较低的功函数,能够在异质界面产生内建电场,显著提高了其在HER中电荷转移效率.此外,MNS中原子之间的强电子相互作用优化了Mo位点的电子结构,降低了氢吸附能力,进一步增强了其本征催化活性.因此, MNS催化剂产生20 m A cm-2和1 A cm-2的析氢电流密度所需的过电位仅为65和210 mV, Tafel斜率仅为96 mV dec-1.此外, MNS在1 A cm-2电流密度下稳定运行240小时后,形貌、结构和性能均无明显变化.以上研究结果为工业大电流制氢所需的非贵金属基电催化剂的设计和合成提供了新思路.

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Efficient and robust missing key tag identification for large-scale RFID systems

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Digital Communications and Networks 2023年第6期9卷 1421-1433页

作者： chu chu Guangjun Wen Jianyu Niu School of Information and Communication Engineering University of Electronic Science and Technology of ChinaChengdu611731China Research Institute of Trustworthy Autonomous Systems Southern University of Science and TechnologyShenZhen518055China School of Engineering The University of British ColumbiaKelownaV1V 1V7BCCanada

Radio Frequency Identification(RFID)technology has been widely used to identify missing *** many applications,rapidly pinpointing key tags that are attached to favorable or valuable items is *** realize this goal,interference from ordinary tags should be avoided,while key tags should be efficiently *** many previous studies,how to rapidly and dynamically filter out ordinary tags when the ratio of ordinary tags changes has not been ***,how to efficiently verify missing key tags in groups rather than one by one has not been explored,especially with varying missing *** this paper,we propose an Efficient and Robust missing Key tag Identification(ERKI)protocol that consists of a filtering mechanism and a verification ***,the filtering mechanism adopts the Bloom filter to quickly filter out ordinary tags and uses the labeling vector to optimize the Bloom filter's performance when the key tag ratio is ***,the verification mechanism can dynamically verify key tags according to the missing rates,in which an appropriate number of key tags is mapped to a slot and verified at ***,we theoretically analyze the parameters of the ERKI protocol to minimize its execution *** numerical results show that ERKI can accelerate the execution time by more than 2.14compared with state-of-the-art solutions.

关键词： RFID Missing key tag identification Time efficiency Robust

基于Jeeves模式搜索理论地基参数的更新Bayes探测法（英文）

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2018年第9期19卷 691-703页

作者： Jian ZHANG chao JIA chu-wei ZHOU Department of Mechanics and Structural Engineering Nanjing University of Aeronautics and Astronautics School of Civil Engineering Shandong University

目的:通过Jeeves模式搜索理论建立弹性地基参数的更新Bayes探测分析模型,以及获得地基参数的寻优搜索结果。创新点:1.根据Bayes统计理论,推导更新Bayes误差函数。2.结合最优步长的抛物线插值理论,推求地基参数的Jeeves模式搜索寻优方法... 详细信息

目的:通过Jeeves模式搜索理论建立弹性地基参数的更新Bayes探测分析模型,以及获得地基参数的寻优搜索结果。创新点:1.根据Bayes统计理论,推导更新Bayes误差函数。2.结合最优步长的抛物线插值理论,推求地基参数的Jeeves模式搜索寻优方法,建立地基参数的探测分析模型。方法:1.根据Bayes统计理论,推导更新Bayes误差函数(公式(4))及误差函数对地基参数的梯度表达式(公式(5))。2.根据中厚度弹性地基板理论,推求Winkler地基上板的控制微分方程(公式(19))和Fourier闭式解(公式(20))。3.提出最优步长的抛物线插值寻优方案,并结合Jeeves模式搜索理论建立弹性地基参数的更新Bayes探测分析模型。结论:1.基于更新Bayes理论,可研究地基参数的Jeeves模式搜索分析模型,且地基参数的探测迭代过程具有良好的稳定性与收敛性。2.更新Bayes误差函数能同时考虑不同量测次数和不同测点的位移实测信息,计算效率较高。3.与共轭梯度法和Kalman滤波方法不同的是,Jeeves模式搜索理论的迭代过程不涉及误差函数偏导数计算,避免了迭代过程的误差累积。

关键词： Jeeves模式搜索理论更新Bayes误差函数探测地基参数 Fourier闭式解

Extensional tectonics and North China Craton destruction:Insights from the magnetic susceptibility anisotropy(AMS)of granite and metamorphic core complex

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Science China Earth Sciences 2021年第9期64卷 1557-1589页

作者： Wei LIN Jipei ZENG Lingtong MENG Huabiao QIU Wei WEI Zhiheng REN Yang chu Shuangjian LI chao SONG Qincheng WANG State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsInnovation Academy for Earth ScienceChinese Academy of SciencesBeijing100029China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing100049China Sinopec Petroleum Exploration and Production Research Institute Beijing100083China SinoProbe Center Chinese Academy of Geological SciencesBeijing100037China

The craton is a long-lived stable geologic unit on the Earth’s ***,since the Mesozoic,the North China Craton(NCC)experienced large-scale lithospheric removal,the fundamental change of physical and chemical characteristics of the lithospheric mantle,widely distributed crustal deformation,and extensive *** complex evolution contrary to other cratons is called the NCC *** magmatism in the eastern NCC is an important response to the lithospheric removal at depth and crustal deformation on the *** plutons emplace under a tectonic context and therefore record the information of the tectonics;especially,the anisotropy magnetic susceptibility(AMS)pattern of the pluton was acquired with the influence of regional *** the past fifteen years,about 22 plutons intruding during the different periods from the Late Triassic to the late stage of the Early Cretaceous have been studied with *** emplacement mechanisms of plutons and the contemporary tectonic setting were discussed to constrain their relationship with the NCC destruction in different stages of *** a result,the Late Triassic,Early Jurassic,and Late Jurassic plutons exhibit consistent N(E)-S(W)trending magnetic *** early stage of Early Cretaceous plutons display NW-SE trending magnetic lineations,while the late stage of Early Cretaceous plutons show magnetic lineations with various *** with previous studies,it is concluded that the emplacements of the plutons intruding in these three stages were controlled by weak N(E)-S(W)trending extension,regional NW-SE trending extension,and weak extension in the shallow crustal level,*** transformation of regional extension from the N(E)-S(W)to the NW-SE direction was accompanied by a strain-increasing *** extensional tectonics in the eastern NCC was interpreted to represent the interaction between Mongol-Okhotsk belt,PaleoPacific plate,and eastern Eurasian continent

关键词： Mesozoic granite Anisotropy of magnetic susceptibility(AMS)of granite Eastern NCC Extensional tectonics NCC destruction

Hexagonal boron nitride:A metal-free catalyst for deep oxidative desulfurization of fuel oils

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Green Energy & Environment 2020年第2期5卷 166-172页

作者： Peiwen Wu Linjie Lu Jing He Linlin Chen Yanhong chao Minqiang He Fengxia Zhu Xiaozhong chu Huaming Li Wenshuai Zhu School of Chemistry and Chemical Engineering Insitute for Energy ResearchJiangsu UniversityZhenjiang212013China School of the Environment and Safety Engineering Jiangsu University212013China School of Chemistry and Chemical Engineering Huaiyin Normal UniversityHuaian223300China

Oxidative desulfurization(ODS)has been proved to be an efficient strategy for the production of clean fuel *** metal-based materials have been employed as excellent ODS catalysts,but being hindered by their high-cost and potential secondary *** this work,we employed graphene analogous hexagonal boron nitride(h-BN)as a metal-free catalyst for ODS with hydrogen peroxide(H2O2)as the *** h-BN catalyst was characterized and proved to be a few-layered structure with relatively high specific surface *** h-BN catalyst showed a 99.4%of sulfur removal in fuel oil under the optimized reaction ***,the h-BN can be recycled for 8 times without significant decrease in the catalytic *** mechanism analysis found that it is the boron radicals in h-BN activated H2O2 to generate·OH species,which can readily oxidize sulfides to corresponding sulfones for *** work would provide another choice in choosing metal-free catalysts for ODS.

关键词： Boron nitride Metal-free Oxidation Deep desulfurization Fuel oils

Two new species of the genus Sinopodisma(Orthoptera:Acridoidea:Catantopidae:Podisminae) from China

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Zoological Systematics 2015年第3期40卷 349-354页

作者： Xiang-chu Yin Yong-chao Zhi Zhan Yin College of Life Sciences Hebei University College of Plant Protection Shandong Agricultural University Northwest Plateau Institute of Biology Chinese Academy of Sciences

Two new species of the genus Sinopodisma Chang, 1940 from Guizhou, China are described in this paper. S. xiai sp. nov. is similar to S. keloggii （Chang, 1940）, but differs from the latter by the length of a segment in antennae 2.5 times width in the middle part, median keel ofpronotum distinct, cercus of male very wide at basal part, its maximum width 2.2 times width of middle part and ancorae of epiphallus oblique inward, lower margin straight. S. fanjingshana sp. nov. is similar to S. wulingshana Peng ＆ Fu, 1992, but differs from the latter in hind margin of pronotum with small hollow slightly in the middle, tegmina of male extending over the hind margin of first abdominal tergum distinctly, interspace of mesosternum narrow at the middle in male, ancorae of epiphallus lower than anterior projection, length of subgenital plate 1.5 times width in female. Type specimens are deposited in the Natural Museum of Hebei University, Baoding, Hebei, China.

关键词： Orthoptera Catantopidae Sinopodisma new species Guizhou.

主体结构荷载可控的新型组合式防护结构(Ⅱ):影响因素及设计理念

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爆炸与冲击 2025年第1期45卷 16-27页

作者：方秦高矗孔祥振杨亚陆军工程大学爆炸冲击防灾减灾国家重点实验室江苏南京210007 内蒙古财经大学财政税务学院内蒙古呼和浩特010070

为明确泡沫混凝土厚度和强度对组合式防护结构抗爆性能的影响,充分发挥和合理利用泡沫混凝土良好的消波特性,首先通过试验及数值模拟探讨不同泡沫混凝土厚度和强度对组合式防护结构抗爆性能的影响,并分析分层梯度泡沫混凝土在爆炸波作... 详细信息

为明确泡沫混凝土厚度和强度对组合式防护结构抗爆性能的影响,充分发挥和合理利用泡沫混凝土良好的消波特性,首先通过试验及数值模拟探讨不同泡沫混凝土厚度和强度对组合式防护结构抗爆性能的影响,并分析分层梯度泡沫混凝土在爆炸波作用下的消波特性。然后将组合式防护结构与采用中粗砂为分配层的传统成层式结构进行对比分析验证其优越性,在此基础上,总结凝练出组合式防护结构的主体结构荷载可控的设计理念。结果表明,利用泡沫混凝土材料较长的屈服平台和较低的波阻抗,以泡沫混凝土作为能量调控层,通过设计泡沫混凝土强度等级(密度等级)和厚度以及采用多层梯度泡沫混凝土,可使得作用于主体结构上的爆炸荷载峰值恰为泡沫混凝土屈服强度,实现对主体结构上荷载的可控设计,有效解决了中粗砂为分配层的传统成层式结构不易控制作用于主体结构上荷载的问题。研究结果可为抗新型钻地弹的防护设计提供重要参考。

关键词：泡沫混凝土组合式防护结构可控设计爆炸波消波