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Flexible multilayer MEMS coils and their application in energy harvesters

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Science China(Technological Sciences) 2024年第4期67卷 1282-1293页

作者： ZHANG Jie HOU XiaoJuan QIAN Shuo BI XiaoXue HU DongXu LIU jianjun geng WenPing MU JiLiang HE Jian CHOU XiuJian Science and Technology on Electronic Test and Measurement Laboratory North University of ChinaTaiyuan 030051China School of Software North University of ChinaTaiyuan 030051China

Electromagnetic vibration energy harvesters are promising for the power supply of wireless sensor nodes,small electronic devices,and wearable *** electromagnetic harvesters usually increase output by increasing the size of coils and magnets,limiting the improvement of energy conversion efficiency and power *** this study,multilayer microelectromechanical system(MEMS)coils were prepared using flexible electronics,and their high integration performance in arbitrary space was utilized to greatly improve the utilization of the space magnetic field by the electromagnetic *** core magnet of the generator was magnetically balanced to achieve levitation,which improved the sensitivity and reduced fatigue damage compared with traditional spring *** wound coils on the top and bottom of the magnet and the flexible coils on the sides worked together to improve the energy efficiency and output of the *** output performance of the device with different number distributions was simulated using mathematical models to obtain the optimal structural *** results show that by introducing flexible multilayer MEMS coils on the side surface of the energy harvester,the open-circuit voltage of the energy generators increased from 7 to 10 V by more than 43%.Flexible multilayer MEMS coils can enhance energy conversion rates and possess compact dimensions,making them suitable for integration onto complex *** the vibration energy harvesting system testing,the maximum peak power of the harvester was 7.1 m W at an acceleration of1 g and a resonant frequency of 11 Hz with a resistor of 3.5 kΩinternal ***,a 470μF capacitor can be charged to 3.5 V within 10 s to drive a hygrothermograph to work for more than 80 s and can supply a light bulb *** strategy shows the great potential of vibration-energy-driven electromagnetic generators for powering small electronics in limited spaces.

关键词： electromagnetic harvester mechanical energy harvesting multilayer MEMS coils magnetic levitation overall space magnetic field flexible planar coils

The microsatellite markers with Genetic Diversity of Alpaca(Lama pacos)

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The microsatellite markers with Genetic Diversity of Alpaca(...

徐州卧牛山西汉楚王墓地墓主人及相关问题的认识

中国畜牧兽医学会动物解剖及组织胚胎学分会第十九次学术研讨会

作者： Yucong Cui jianjun geng Qingling geng Zengfeng Ding Ruiwen Fan Changsheng Dong College of Animal Science and Veterinary Medicine Shanxi Agricultural University

The polymorphisms of 17 microsatellite loci of 61 Alpaca(Lama pacos) was detected using polymerase chain reaction(PCR) and DNA sequencing technology,and the paternity testing was studied combined with the parents of this *** purpose is to supply effective microsatellite locus for germplasm resourses evaluation and paternity testing of *** demonstrated that 17 microsatellite loci altogether discovered 99 *** number of alleles was most in VOLP77(11),and the least in VOLP12(2).The heterozygosity was highest in VOLP77(0.852),while the lowest was VOLP12(0.048).The other 15 microsatellite loci were highly polymorphic except VOLP12 and VOLP01 which are inferior *** mean observed heterozygosity(Ho),the expected heterozygosity(He),and the polymorphism information content(PIC) were 0.594,0.554,and 0.454,*** above results suggested mat there were a relatively high genetic diversity in Alpaca from *** could improve the accuracy requirements of genetic diversity,make the operation more convenient,reduce costs,and be more suitable for practical production.

关键词： Microsatellite Genetic diversity Alpaca

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中原文物 2019年第3期 64-72页

作者：耿建军徐州博物馆徐州市文物考古研究所

卧牛山墓地包括4座横穴式岩洞墓,属于西汉楚王(后)墓葬。其中二号墓和三号墓为中间有门道相通的夫妻同茔异穴合葬墓,形制上表现出从早期向后期过渡的特点。规模最大的二号墓为楚王墓,墓主人为第五代楚安王刘道,三号墓为其王后,一号墓则... 详细信息

卧牛山墓地包括4座横穴式岩洞墓,属于西汉楚王(后)墓葬。其中二号墓和三号墓为中间有门道相通的夫妻同茔异穴合葬墓,形制上表现出从早期向后期过渡的特点。规模最大的二号墓为楚王墓,墓主人为第五代楚安王刘道,三号墓为其王后,一号墓则为后续王后的墓葬。另外,原认定的四号墓可能为第一个王后的暂厝墓,后用作明器车马陪葬坑。

关键词：卧牛山西汉楚王(后)墓刘道陪葬坑

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基于邻域特征的红外低慢小目标检测

红外与激光工程 2019年第A01期48卷 180-186页

作者：南天章耿建君陈旭陈颖天津津航技术物理研究所天津300308 北京电子工程总体研究所北京100854 中国科学院天津工业生物技术研究所天津300308

红外搜索系统具有不发射电磁波、抗电磁干扰能力强、目标指示精度高等优势,在低慢小目标探测领域有很好的应用前景。目前国内外基于红外搜索系统的目标检测算法通常利用当前图像与背景图像配准、差分的手段提取疑似目标,往往需要较大的... 详细信息

红外搜索系统具有不发射电磁波、抗电磁干扰能力强、目标指示精度高等优势,在低慢小目标探测领域有很好的应用前景。目前国内外基于红外搜索系统的目标检测算法通常利用当前图像与背景图像配准、差分的手段提取疑似目标,往往需要较大的存储空间保存周视背景图像,高精度实时图像配准算法的工程化应用也有较大难度。针对以上问题,设计了一种基于邻域特征的红外低慢小目标检测方法。通过高通滤波、边缘检测法提取疑似目标、目标邻域特征值统计法剔除背景干扰、多帧图像目标信息相关等处理过程,可在有效排除地物、云层及飞鸟等多种干扰的同时,准确地检测图像中的无人机目标。试验结果表明,该方法相比传统LCM算法目标检测概率更高、虚警率更低,且不涉及图像差分,具有对硬件资源要求低、实时性好等优点,有较高的工程应用价值。

关键词：图像处理目标检测红外搜索系统低慢小目标

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新一代天气雷达原始资料数据库设计

微计算机信息 2007年第2X期23卷 172-173,168页

作者：耿建军南京信息工程大学电子工程系

随着我国新一代天气雷达布网工作的展开,将逐步积累起大量的天气雷达原始资料。为充分高效的利用这些可能达到海量存储量级的资料开发一个适应气象部门特殊需要的雷达资料数据库是一项极有意义的工作。本文利用VisualFoxPro6.0设计的新... 详细信息

随着我国新一代天气雷达布网工作的展开,将逐步积累起大量的天气雷达原始资料。为充分高效的利用这些可能达到海量存储量级的资料开发一个适应气象部门特殊需要的雷达资料数据库是一项极有意义的工作。本文利用VisualFoxPro6.0设计的新一代天气雷达原始资料数据库,除具有一般数据库的基本功能外,还可以将不同厂家生产的不同类型的雷达数据入库,同时针对不同的天气类型进行分类资料查询,为气象科研工作者提供方便。

关键词：数据库 VFP6.0 天气雷达

The expression of KRT2 and its effect on melanogenesis in alpaca skins

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The expression of KRT2 and its effect on melanogenesis in al...

Ribosomal Proteins expression and phylogeny in Alpaca(Lama pacos) skin

中国畜牧兽医学会动物解剖及组织胚胎学分会第十九次学术研讨会

作者： Yucong Cui Yajun Song Qingling geng Zengfeng Ding Yilong Qin Ruiwen Fan Changsheng Dong jianjun geng College of Animal Science and Veterinary Medicine Shanxi Agricultural University Tianshui Entry-Exit Inspection and Quarantine Bureau

In order to investigate the effects of the keratin 2(KRT2) on alpaca melanocyte in vivo and vitro,the immunohistochemistry(IHC),quantitative real-time PCR(qPCR),Western blot,and alpaca melanocytes transfection methods were *** results showed that mRNA and protein expression of KRT2 was highly expressed in brown skin in comparison with that in white ***,we found that KRT2 was expressed in alpaca melanocytes in vitro by *** transfection with KRT2 in alpaca melanocytes,the relative mRNA and protein expression of KRT2,microphthalmia-associtated transcription factor(MITF),tyrosinase(TYR) and tyrosinase-related protein 1(TYRP1) in alpaca skin melanocytes was increased with significant differences;a further result was the increase of melanin *** results suggested that KRT2 functions in alpaca hair color formation,which offered an essential theoretical basis for further exploration of the role of melanogenesis.

关键词： KRT2 Hair color Alpaca Melanocyte Skin

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Ribosomal Proteins expression and phylogeny in Alpaca(Lama p...

中国畜牧兽医学会动物解剖学及组织胚胎学分会第十七次学术研讨会

作者： Bai Junming Fan Ruiwen geng jianjun Yang Shanshan Xie Jianshan Dong Chang-sheng college of Animal Science And Veterinary Medicine Shanxi Agricultural University

Ribosomal proteins(RP) has been reported as a central player in the translation system,and are required for the growth and maintenance of all cell *** genes form a family of homologous proteins that express in the stable pattern and were used for phylogenetic *** we constructed a cDNA library of alpaca skin and 13,800 clones were *** the cDNA library,RP genes from skin cDNA library of alpaca were *** 8 RP genes were selected at random and built the Phylogenetic trees from the DNA sequences by using parsimony or maximum likelihood methods for molecular and evolutionary analysis of ribosomal *** results showed that the 42 RP genes of alpaca have been expressed in alpaca *** were highly *** phylogeny inferred from all these methods suggested that the evolutionary distances of alpaca RP genes were closer to rat.

关键词： Ribosomal protein expression Phylogenetic tree alpaca

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基于形态滤波的红外图像目标检测方法

红外与激光工程 2013年第S01期42卷 249-252页

作者：刘忠领于振红耿建君朱振福北京理工大学光电学院北京100081 光学辐射重点实验室北京100854 北京电子工程总体研究所北京100854

针对远距离红外弱小目标低信噪比的特点,提出了运用形态滤波方法进行红外图像目标检测跟踪。首先对形态滤波理论及特点进行了介绍和分析,然后对形态滤波算法进行仿真,通过在两个方向分别对输入图像进行开运算处理,然后逐点取二者中的最... 详细信息

针对远距离红外弱小目标低信噪比的特点,提出了运用形态滤波方法进行红外图像目标检测跟踪。首先对形态滤波理论及特点进行了介绍和分析,然后对形态滤波算法进行仿真,通过在两个方向分别对输入图像进行开运算处理,然后逐点取二者中的最佳值的方法实现了对背景的有效估计。算法仿真和实际外场试验中,选取结构元素尺寸为7,采用背景均值加1.5倍均方差作阈值进行预处理,该算法具有良好的背景抑制能力,能较好地检测出云天或地物背景中的弱小目标。

关键词：形态滤波小目标检测背景估计目标分割

基于系统聚类分析的煤矿突水水源识别技术——以潞安矿区王庄煤矿为例

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中国煤炭地质 2019年第8期31卷 54-59页

作者：耿建军中国煤炭地质总局勘查研究总院

煤矿防治水的根本是突水水源识别,而华北煤田含水层的叠置的关系及上下导水通道使传统的矿井突水水源判别方法存在准确率较低的问题。以潞安矿区王庄煤矿为例,该区域主要的含水层为奥陶系岩溶裂隙含水层、上石炭统太原组灰岩含水层、二... 详细信息

煤矿防治水的根本是突水水源识别,而华北煤田含水层的叠置的关系及上下导水通道使传统的矿井突水水源判别方法存在准确率较低的问题。以潞安矿区王庄煤矿为例,该区域主要的含水层为奥陶系岩溶裂隙含水层、上石炭统太原组灰岩含水层、二叠系砂岩孔隙裂隙含水层与第四系孔隙含水层,各含水层的化学特征、富水性与渗透性具有明显差异。采集矿井各含水层水样共34件,分析其化学特征,首先运用系统聚类分析法对各水源样本进行筛选及异常值剔除,然后利用Piper三线图对水样进行分类。根据分类结果,推测该矿井突水水源为砂岩裂隙水,另外依据Piper三线图可判别砂岩水和峰峰组奥灰水,准确率右达67.7%。

关键词：突水水源岩溶裂隙砂岩裂隙水聚类分析法 Piper三线图