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学者姓名：李劲林
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Abstract ：
To investigate the mechanism of aquatic pathogens in quorum sensing (QS) and decode the signal transmission of aquatic Gram-negative pathogens, this paper proposes a novel method for the intelligent matching identification of eight quorum signaling molecules (N-acyl-homoserine lactones, AHLs) with similar molecular structures, using terahertz (THz) spectroscopy combined with molecular dynamics simulation and spectral similarity calculation. The THz fingerprint absorption spectral peaks of the eight AHLs were identified, attributed, and resolved using the density functional theory (DFT) for molecular dynamics simulation. To reduce the computational complexity of matching recognition, spectra with high peak matching values with the target were preliminarily selected, based on the peak position features of AHL samples. A comprehensive similarity calculation (CSC) method using a weighted improved Jaccard similarity algorithm (IJS) and discrete Frechet distance algorithm (DFD) is proposed to calculate the similarity between the selected spectra and the targets, as well as to return the matching result with the highest accuracy. The results show that all AHL molecular types can be correctly identified, and the average quantization accuracy of CSC is 98.48%. This study provides a theoretical and data-supported foundation for the identification of AHLs, based on THz spectroscopy, and offers a new method for the high-throughput and automatic identification of AHLs.
Keyword ：
Gram-negative pathogens Gram-negative pathogens molecular dynamics simulation molecular dynamics simulation quorum signaling molecules quorum signaling molecules spectral similarity calculation spectral similarity calculation terahertz spectroscopy terahertz spectroscopy
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| GB/T 7714 | Zhang, Lintong , Kong, Xiangzeng , Qu, Fangfang et al. Comprehensive Similarity Algorithm and Molecular Dynamics Simulation-Assisted Terahertz Spectroscopy for Intelligent Matching Identification of Quorum Signal Molecules (N-Acyl-Homoserine Lactones) [J]. | INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES , 2024 , 25 (3) . |
| MLA | Zhang, Lintong et al. "Comprehensive Similarity Algorithm and Molecular Dynamics Simulation-Assisted Terahertz Spectroscopy for Intelligent Matching Identification of Quorum Signal Molecules (N-Acyl-Homoserine Lactones)" . | INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES 25 . 3 (2024) . |
| APA | Zhang, Lintong , Kong, Xiangzeng , Qu, Fangfang , Chen, Linjie , Li, Jinglin , Jiang, Yilun et al. Comprehensive Similarity Algorithm and Molecular Dynamics Simulation-Assisted Terahertz Spectroscopy for Intelligent Matching Identification of Quorum Signal Molecules (N-Acyl-Homoserine Lactones) . | INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES , 2024 , 25 (3) . |
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Abstract ：
由于将莫尔条纹图进行快速傅里叶变换时会导致频谱泄露，导致无法实现360°的全周精确测量，因此提出基于莫尔条纹的全周转角测量方法并搭建转角测量系统。以1°为步距，利用CMOS相机采集不同宽度的莫尔条纹图像，采用快速傅里叶变换（fast Fourier transform, FFT）对条纹进行处理，得到光栅频谱信息。同时采用汉宁窗能量重心校正算法（Hanning-window energy centrobaric method, HnWECM）校正频谱，得到莫尔条纹图像表征转角的真实有效信息，实现全周精确测量。实验结果表明，该系统可快速精准地实现转角的全周测量，测量范围广，最大误差率为0.243 3%。
Keyword ：
快速傅里叶变换 快速傅里叶变换 汉宁窗能量重心法 汉宁窗能量重心法 莫尔条纹 莫尔条纹 转角测量 转角测量
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| GB/T 7714 | 许令鸿 , 张秋坤 , 林杰文 et al. 基于莫尔条纹的全周转角精密测量方法 [J]. | 应用光学 , 2024 , 45 (03) : 644-651 . |
| MLA | 许令鸿 et al. "基于莫尔条纹的全周转角精密测量方法" . | 应用光学 45 . 03 (2024) : 644-651 . |
| APA | 许令鸿 , 张秋坤 , 林杰文 , 李劲林 , 黎昕婷 , 钟舜聪 . 基于莫尔条纹的全周转角精密测量方法 . | 应用光学 , 2024 , 45 (03) , 644-651 . |
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Dynamic characteristics play a crucial role in evaluating the performance of weight sensors and are essential for achieving fast and accurate weight measurements. This study focuses on a weight sensor based on optical coherence displacement. Using finite element analysis, the sensor was numerically simulated. Frequency domain and time domain dynamic response characteristics were explored through harmonic response analysis and transient dynamic analysis. The superior dynamic performance and reduced conditioning time of the non-contact optical coherence-based displacement weight sensor were confirmed via a negative step response experiment that compared the proposed sensing method to strain sensing. Moreover, dynamic performance metrics for the optical coherence displacement-type weight sensor were determined. Ultimately, the sensor's dynamic performance was enhanced using the pole-zero placement method, decreasing the overshoot to 4.72% and reducing the response time to 0.0132 s. These enhancements broaden the sensor's operational bandwidth and amplify its dynamic response capabilities.
Keyword ：
displacement type displacement type dynamic characteristics dynamic characteristics optical coherence optical coherence weight sensor weight sensor
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| GB/T 7714 | Lai, Zhengchuang , Ouyang, Zhongjie , Zhong, Shuncong et al. Dynamic Characterization of Optical Coherence-Based Displacement-Type Weight Sensor [J]. | SENSORS , 2023 , 23 (21) . |
| MLA | Lai, Zhengchuang et al. "Dynamic Characterization of Optical Coherence-Based Displacement-Type Weight Sensor" . | SENSORS 23 . 21 (2023) . |
| APA | Lai, Zhengchuang , Ouyang, Zhongjie , Zhong, Shuncong , Liang, Wei , Yang, Xiaoxiang , Lin, Jiewen et al. Dynamic Characterization of Optical Coherence-Based Displacement-Type Weight Sensor . | SENSORS , 2023 , 23 (21) . |
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针对空间用磁悬浮隔振平台六自由度运动量测量系统复杂、成本高、测量与驱动异位等问题，提出一种激励器磁感应位置测量方法。首先运用分子环流法、镜像法和Biot-Savar定律建立激励器气隙磁场精确解析模型；进而结合法拉第电磁感应定律建立激励线圈在单自由度方向以恒定速度运动时位置与感应电压的解析模型；最后通过有限元仿真和物理实验对上述位置与电压关系进行了验证。结果显示，所提出解析模型的计算结果与实验及仿真结果的满量程偏差均在±5%以内，拟用于测量的线性区的偏差在5%以内，可知所提出的激励器磁感应位置测量方法是可行的。
Keyword ：
位置测量 位置测量 有限元 有限元 磁悬浮 磁悬浮 解析建模 解析建模
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| GB/T 7714 | 陈丽武 , 李劲林 , 李怡杰 et al. 基于解析法的激励器磁感应位置测量方法 [J]. | 测控技术 , 2023 , 42 (11) : 6-12,31 . |
| MLA | 陈丽武 et al. "基于解析法的激励器磁感应位置测量方法" . | 测控技术 42 . 11 (2023) : 6-12,31 . |
| APA | 陈丽武 , 李劲林 , 李怡杰 , 钟舜聪 . 基于解析法的激励器磁感应位置测量方法 . | 测控技术 , 2023 , 42 (11) , 6-12,31 . |
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本发明提出一种仿生蚯蚓装置及其工作方法，所述蚯蚓装置包括通过转向单元相连的多个伸缩单元；所述伸缩单元包括推杆机构和沿首尾方向设置的弹性件；所述伸缩单元的伸缩动作由弹性件在推杆机构作用下的形变、弹性件的自然恢复来驱动；当蚯蚓装置移动时，各伸缩单元按预设的伸缩次序执行伸缩动作以驱动蚯蚓装置；所述转向单元由微型丝杆滑台提供推动力；当蚯蚓装置转向时，转向单元的各微型丝杆滑台相互配合推动鱼眼杆端关节轴承，进而控制各伸缩单元以单杆球头关节轴承球心为原点的相互夹角以实现蚯蚓身体的弯曲；本发明以微型电推杆和微型丝杆滑台作为动力源，利用金属弹簧片提供快速恢复力，运行速度较快。
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| GB/T 7714 | 李劲林 , 陈琰 , 陈恒升 et al. 一种仿生蚯蚓装置及其工作方法 : CN202210088841.7[P]. | 2022-01-26 . |
| MLA | 李劲林 et al. "一种仿生蚯蚓装置及其工作方法" : CN202210088841.7. | 2022-01-26 . |
| APA | 李劲林 , 陈琰 , 陈恒升 , 郭森涛 , 曾昭国 . 一种仿生蚯蚓装置及其工作方法 : CN202210088841.7. | 2022-01-26 . |
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