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Target-oriented Passive Localization Techniques Inspired by Terrestrial Arthropods: A Review

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Journal of Bionic Engineering 2022年第3期19卷 571-589页

作者： fu liu Yueqiao Wang Yufeng Zhao Meihe liu Tao Hou Zhiwu Han College of Communication Engineering Jilin UniversityChangchun130022China Key Laboratory of Bionic Engineering Jilin UniversityChangchun130022China

For centuries,researchers have been fascinated by how simple-minded arthropods pick up definite cues and locate a potential target in an *** to the active echolocation of classical creatures,arthropods exhibit passive *** use spatially separated sensilla to cooperatively pinpoint target-generated signal sources such as sound,light,ground vibration,air disturbance,and thermal *** paper introduces the localization mechanisms of typical terrestrial arthropods with diverse survival *** on these special mechanisms,a series of theoretical models and advanced bionic equipment have been reviewed,and some key challenges and future directions are *** believe that intensive study on arthropods can promote innovative development of miniaturized,low power-dissipation,and high-performance localization equipment,thereby enhancing and expanding current localization techniques.

关键词： Target-oriented localization Passive techniques Terrestrial arthropods Bioinspiration

Age of the Miyun dyke swarm:Constraints on the maximum depositional age of the Changcheng System

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Chinese Science Bulletin 2012年第35期57卷 105-110页

作者： PENG Peng liu fu ZHAI MingGuo GUO JingHui State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China

A group of NE-trending(～30°)mafic dykes,termed Miyun swarm herein,are distributed around the Miyun Reservoir,northe China,and have individual widths of over 40 m,and lengths of up to 8000 *** grains were extracted from a～40 wide *** an isotope dilution thermal ionization mass spectrometry method,these grains yield an average 207Pb/206Pb a of 1731±4 Ma(n=4;or 1731±1 Ma,n=3).Because this dyke is overlain unconformably by conglomerates of the Changzhoug Formation,the lowermost formation of the Changcheng Group,the maximum depositional age of this group is constrained to no earlier than 1731 *** result also suggests that the Changcheng System,with the Changcheng Group as its standard stra graphic section,is younger than 1731 *** Miyun dykes possibly have distinct petrogenesis from the subsequent anorth site-rapakivi intrusions(1730-1680 Ma),which are thought to be responsible for the opening of the Yan-Liao rift,where Changcheng Group was *** it is reasonable to set the initial boundary of the Changchengian Period at 1730 Ma slightly younger.

关键词：密云水库长城系年龄岩墙沉积热电离质谱法长城集团谷物产量

Structure Optimization for Echo State Network Based on Contribution

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Tsinghua Science and Technology 2019年第1期24卷 97-105页

作者： Dingyuan Li fu liu Junfei Qiao Rong Li College of Communication Engineering Jilin University Faculty of Information Technology Beijing University of Technology Department of Information Technology Beijing Vocational College of Agriculture

Echo State Network(ESN) is a recurrent neural network with a large, randomly generated recurrent part called the dynamic reservoir. Only the output weights are modified during training. However, proper balancing of the trade-off between the structure and performance for ESN remains a difficult task. In this paper, a structure optimized method for ESN based on contribution is proposed to simplify its network structure and improve its ***, we evaluate the contribution of reservoir neurons. Second, we present a pruning mechanism to remove the unimportant connection weights of reservoir neurons with low contribution. Finally, the new output weights are learned with the pseudo inverse method. The novel optimized ESN, named C-ESN, is tested on a Lorenz chaotic time-series prediction and an actual municipal sewage treatment system. The simulation results show that the C-ESN can have better prediction and generalization performance than ESN.

关键词： neural network structural design time-series prediction

Effects of Anodic Voltages on Microstructure and Properties of Plasma Electrolytic Oxidation Coatings on Biomedical NiTi Alloy

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Journal of Materials Science & Technology 2013年第1期29卷 22-28页

作者： Jilin Xu fu liu Junming Luo Liancheng Zhao School of Materials Science and Engineering Nanchang Hangkong University School of Materials Science and Engineering Harbin Institute of Technology

Plasma electrolytic oxidation （PEO） coatings, formed under various anodic voltages （320-440 V） on biomedical NiTi alloy, are mainly composed of γ-AI203 crystal phase. The evolution of discharging sparks during the PEO process under different anodic voltages was observed. The surface and cross-sectional morphologies, composition, bonding strength, wear resistance and corrosion resistance of the coatings were investigated by scanning electron microscopy （SEM）, thin-film X-ray diffraction （TF-XRD）, energy dispersive X-ray spectrometry （EDS）, surface roughness, direct pull-off test, ball-on-disk friction and wear test and potentiodynamic polarization test, respectively. The results showed that the evolution of discharging sparks during the PEO process directly influenced the microstructure of the PEO coatings and further influences the properties. When the anodic voltage increased from 320 V to 400 V, the corrosion resistance and wear resistance of the coatings slowly increased, and all the bonding strength was higher than 60 MPa; further increasing the anodic voltages, especially up to 440 V, although the thickness and γ-AI203 crystallinity of the coatings further increased, the microstructure and properties of the coatings were obviously deteriorated.

关键词： Plasma electrolytic oxidation Biomedical NiTi alloy AI203 coating Anodic voltage

偶氮四唑叠氮基甲脒AFZT高压物性的第一性原理计算

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原子与分子物理学报 2024年第3期41卷 113-122页

作者：杜艺华刘其军甘云丹李星翰刘福生刘正堂西南交通大学物理科学与技术学院键带工程组成都610031 西安近代化学研究所西安710065 西北工业大学材料学院西安710072

偶氮四唑叠氮基甲脒AFZT的爆轰性能表现优异,在高能炸药领域中具有广阔的应用前景.本文采用基于密度泛函理论的第一性原理方法计算了AFZT在0~50 GPa压力下的晶体结构、电子性质以及氢键相互作用,并分析了这些性质在压力下的变化规律.在... 详细信息

偶氮四唑叠氮基甲脒AFZT的爆轰性能表现优异,在高能炸药领域中具有广阔的应用前景.本文采用基于密度泛函理论的第一性原理方法计算了AFZT在0~50 GPa压力下的晶体结构、电子性质以及氢键相互作用,并分析了这些性质在压力下的变化规律.在压力的作用下,AFZT晶体在5 GPa下发生了结构转变并伴随着电子结构中带隙值的突变,其带隙先减小后增大再减小,总态密度的峰值随着压力的增加而减小.结构中叠氮甲脒阳离子上的N8-N9与N9-N10键在压力下表现得最稳定,N-H…N类型的氢键在所有相互作用中占据主导地位.此外,AFZT结构沿不同晶轴压缩的难易程度与此方向上氢键相互作用分布的疏密有关,并且其氢键主要沿xz平面分布而在y轴上分布极少,这导致了它沿y轴方向最易被压缩.

关键词： AFZT 第一性原理含能材料高压

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抽出油活化废胶粉改性沥青老化性能

长安大学学报（自然科学版） 2024年第2期44卷 22-33页

作者：孔佩佩符刘旭徐刚陈先华张久洋张超东南大学交通学院江苏南京211189 四川数字交通科技股份有限公司四川成都610095 东南大学化学化工学院江苏南京211189 湖州市华兴城建发展有限公司浙江湖州313000

为探究抽出油活化废胶粉改性沥青(ARMA)的老化性能和老化机理,通过室内加速老化试验分别对ARMA的短期老化和长期老化进行模拟,并利用动态剪切流变仪、傅里叶红外光谱仪、四组分分析、元素分析以及扫描电子显微镜对不同老化条件下ARMA的... 详细信息

为探究抽出油活化废胶粉改性沥青(ARMA)的老化性能和老化机理,通过室内加速老化试验分别对ARMA的短期老化和长期老化进行模拟,并利用动态剪切流变仪、傅里叶红外光谱仪、四组分分析、元素分析以及扫描电子显微镜对不同老化条件下ARMA的老化性能和微观结构进行研究。研究结果表明:随着老化程度的加深,ARMA的复数剪切模量、车辙因子以及疲劳因子逐渐增大,相位角逐渐减小,且ARMA的复数剪切模量、相位角及其对应老化指数的变化量均小于废胶粉改性沥青(RMA)的相同指标变化量;ARMA中饱和分、芳香分以及胶质的含量随老化强度的增强而减少,沥青质含量却增加;ARMA中碳、氢元素含量随老化强度的增强而减少,但氧、硫元素含量及芳碳率、环结构缩合指数表现出与之相反的趋势;红外光谱上ARMA的羰基、亚砜基峰强度随老化程度的加深而增强,对应的羰基老化指数和亚砜基老化指数呈增大趋势;C=C峰强度却随之减小,对应的丁二烯老化指数也呈减小趋势;微观形貌图上ARMA中活化废胶粉与沥青间的界面结合能力随老化作用而逐渐减弱,活化废胶粉逐渐从沥青中突显出;抽出油活化废胶粉改性沥青的抗老化机理是活化作用增强了废胶粉的活性,使废胶粉与基质沥青形成稳定的胶体结构,从而阻碍了老化过程中氧气对胶体结构的侵蚀,实现了活化废胶粉改性沥青抗老化能力的提高。

关键词：道路工程抽出油活化废胶粉改性沥青试验研究老化性能

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裂化温度对加氢裂化产品性质的影响

当代化工 2024年第6期53卷 1407-1410,1430页

作者：伍忠勇刘付福千中国石油化工股份有限公司茂名分公司广东茂名525000

以加氢裂化尾油为原料生产API三类基础油的装置对加氢裂化原料有较为严格的要求,一般要求进料为石蜡基或偏石蜡基原料。为扩大原料来源,降低生产成本,以中间基蜡油为原料,掺炼美孚蜡,采用FRIPP推荐的FBN/FDM/FF-66/FC-28/FF-66催化剂级... 详细信息

以加氢裂化尾油为原料生产API三类基础油的装置对加氢裂化原料有较为严格的要求,一般要求进料为石蜡基或偏石蜡基原料。为扩大原料来源,降低生产成本,以中间基蜡油为原料,掺炼美孚蜡,采用FRIPP推荐的FBN/FDM/FF-66/FC-28/FF-66催化剂级配体系,用加氢中试装置考察了裂化段反应温度对产品分布及产品性质的影响。结果表明:提高裂化段的反应温度,混合油加氢裂化的产品中石脑油馏分收率升高,芳潜降低;柴油馏分收率升高,密度明显降低,十六烷指数升高;尾油收率降低,黏度指数先升高后降低,可以为下游异构脱蜡装置提供高黏度指数尾油进料,生产二类和三类润滑油基础油。

关键词：加氢催化剂产品性质黏度指数反应

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一测多评法同时测定心脑康胶囊中9种成分

中成药 2024年第4期46卷 1077-1083页

作者：刘康康靳婉君浩文婷刘富强赖晶蔺瑞丽倪琳甘肃中医药大学药学院甘肃兰州730000 甘肃省药品检验研究院国家中药材及饮片质量控制重点实验室甘肃省中藏药检验检测技术工程实验室甘肃兰州730030

目的建立一测多评法同时测定心脑康胶囊中丹参素钠、丹酚酸B、芍药苷、阿魏酸、羟基红花黄色素A、2,3,5,4′-四羟基二苯乙烯-2-O-β-D-葡萄糖苷、斯皮诺素、甘草苷、葛根素的含量。方法分析采用SVEA C_(18)色谱柱(250 mm×4.6 mm, 5μ... 详细信息

目的建立一测多评法同时测定心脑康胶囊中丹参素钠、丹酚酸B、芍药苷、阿魏酸、羟基红花黄色素A、2,3,5,4′-四羟基二苯乙烯-2-O-β-D-葡萄糖苷、斯皮诺素、甘草苷、葛根素的含量。方法分析采用SVEA C_(18)色谱柱(250 mm×4.6 mm, 5μm);流动相乙腈-0.2%甲酸,梯度洗脱;体积流量0.5 mL/min;柱温30℃;检测波长280、403 nm。以葛根素为内标,计算其他8种成分的相对校正因子,计算其含量。结果 9种成分在各自范围内线性关系良好(r≥0.999 4),平均加样回收率99.83%~101.18%,RSD 1.04%~1.91%。一测多评法所得结果与外标法接近。结论该方法准确稳定,重复性好,可用于心脑康胶囊的质量控制。

关键词：心脑康胶囊化学成分含量测定一测多评

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熊蜂蜂王肠道代谢物与产卵的相关性研究

应用昆虫学报 2024年第2期61卷 330-338页

作者：刘福罡郭雨龙张正义李继莲国家资源昆虫重点实验室中国农业科学院蜜蜂研究所北京100093

【目的】肠道微生物通过直接或者间接影响宿主的健康,有研究表明肠道微生物能够提高产卵量,但是如何影响产卵具体还不清楚,本研究通过肠道微生物代谢物角度去解释这个问题。【方法】采用非靶标代谢组学的方法对两种蜂王进行比较,选择欧... 详细信息

【目的】肠道微生物通过直接或者间接影响宿主的健康,有研究表明肠道微生物能够提高产卵量,但是如何影响产卵具体还不清楚,本研究通过肠道微生物代谢物角度去解释这个问题。【方法】采用非靶标代谢组学的方法对两种蜂王进行比较,选择欧洲地熊蜂Bombus terrestris产卵蜂王6只、28 d未产卵蜂王6只,兰州熊蜂***产卵蜂王6只,28 d未产卵蜂王6只,对其肠道内容物进行代谢组学分析。【结果】产卵欧洲地熊蜂(DQA1)与产卵兰州熊蜂蜂王(LQA1)在脂代谢通路上显著富集;产卵欧洲地熊蜂(DQA1)与28d未产卵的欧洲地熊蜂(LQW)在半胱氨酸与蛋氨酸代谢通路上显著富集;产卵兰州熊蜂(LQA1)与28d未产卵的兰州熊蜂蜂王(LQW)在鞘脂代谢通路上显著富集;28d未产卵的欧洲地熊蜂(DQW)和未产卵的兰州熊蜂蜂王(LQW)没有显著富集的代谢通路。【结论】在两种产卵蜂王之间,在脂代谢通路上有显著差异。在两种未产卵的蜂王中,欧洲地熊蜂蜂王缺少半胱氨酸与蛋氨酸代谢通路中的半胱氨酸和蛋氨酸两种代谢物质,在未产卵兰州熊蜂蜂王中缺少脂代谢通路中的乙醇胺磷酸酯。

关键词：欧洲地熊蜂兰州熊蜂产卵蜂王代谢组学差异代谢物

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