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Design and testing research of LiDAR for detecting atmospheric turbulence

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Optoelectronics Letters 2025年第3期21卷 172-176页

作者： qiu Duoyang LI Xianyang YANG Hao zhu Xiaomeng FANG Zhiyuan XU Xiang School of Advanced Manufacturing Engineering Hefei University Anhui Provincial Engineering Technology Research Center of Intelligent Vehicle Control and Integrated Design Technology Hefei University Science Island Branch of Graduate School University of Science and Technology of China School of Mechanical and Energy Engineering Ningbo Tech University Key Laboratory of Atmospheric Optics Anhui Institute of Optics and Fine Mechanics Chinese Academy of Sciences

Atmospheric turbulence is an important parameter affecting laser atmospheric transmission. This paper reports on a self-developed atmospheric turbulence detection Li DAR system (scanning differential image motion Li DAR(DIM-Li DAR) system). By designing and simulating the optical system of atmospheric turbulence detection Li DAR,the basic optical imaging accuracy has been determined.

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Optimized Bi-level Control for Day-ahead and Real-time Active Power Balancing of an Off-grid Wind Power-to-hydrogen System With ESS Considering Wind Power Uncertainty

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Dianwang Jishu/Power System Technology 2025年第1期49卷 52-62页

作者： qiu, Yiwei Sun, Qingjie Wu, Chenxu zhu, Jie Zeng, Yangjun Chen, Shi Zhou, Buxiang College of Electrical Engineering Sichuan University Sichuan Province Chengdu 610065 China State Grid Ningbo Power Supply Company Zhejiang Province Ningbo 315012 China

Since off-grid wind power-to-hydrogen (Wp2H) systems are not connected to the utility grid, the hydrogen production load and the energy storage system (ESS) must be coordinated to absorb wind power fluctuations and maintain system stability. Such coordination must consider the flexibility constraints of hydrogen production units, the overall hydrogen yield, and the degradation of batteries in the ESS to meet the economic goals of green hydrogen production. Therefore, an optimized bi-level control method for the active power balance is proposed. Firstly, using the Itô process to characterize wind power fluctuations and considering the real-time flexibility reserve of multiple electrolyzers, the upper level is formulated as an intra-day scheduling problem with a 15-minute resolution. Secondly, the lower level optimizes the real-time power of the electrolyzers and the ESS based on their on-off states and baseline power commanded by the upper level, considering the degradation cost of the ESS. This helps to absorb second-level wind power fluctuations. Finally, based on a project plan in Inner Mongolia, China, a case study verifies the effectiveness of the proposed method. © 2025 Power System Technology Press. All rights reserved.

关键词： Hydrogen storage

原位聚合改性纳米TiO_2在封护涂料中的应用研究

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上海涂料 2007年第5期45卷 19-23页

作者：段宏瑜邱建辉朱正柱曹育红南京航空航天大学材料科学与技术学院文物保护材料研究所 210016

通过原位聚合使纳米TiO2均匀分散于改性氟树脂封护体系中,对体系进行了分散性试验、红外光谱分析以及紫外吸收性能测试和透光性测试等。结果表明:添加改性后的纳米TiO2,增强了改性氟树脂封护涂料的抗紫外线能力和耐候性,并且提高了封护... 详细信息

通过原位聚合使纳米TiO2均匀分散于改性氟树脂封护体系中,对体系进行了分散性试验、红外光谱分析以及紫外吸收性能测试和透光性测试等。结果表明:添加改性后的纳米TiO2,增强了改性氟树脂封护涂料的抗紫外线能力和耐候性,并且提高了封护涂料的透气性。

关键词：纳米TiO2 原住聚合改性

融合BiLSTM与CNN的推特黑灰产分类模型

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计算机工程与应用 2025年第1期61卷 186-195页

作者：朱恩德王威高见中国人民公安大学信息网络安全学院北京100038

当前推特等国外社交平台,已成为从事网络黑灰产犯罪不可或缺的工具,对推特上黑灰产账号进行发现、检测和分类对于打击网络犯罪、维护社会稳定具有重大意义。现有的推文分类模型双向长短时记忆网络(bi-directional long short-term memor... 详细信息

当前推特等国外社交平台,已成为从事网络黑灰产犯罪不可或缺的工具,对推特上黑灰产账号进行发现、检测和分类对于打击网络犯罪、维护社会稳定具有重大意义。现有的推文分类模型双向长短时记忆网络(bi-directional long short-term memory,BiLSTM)可以学习推文的上下文信息,却无法学习局部关键信息,卷积神经网络(convolution neural network,CNN)模型可以学习推文的局部关键信息,却无法学习推文的上下文信息。结合BiLSTM与CNN两种模型的优势,提出了BiLSTM-CNN推文分类模型,该模型将推文进行向量化后,输入BiLSTM模型学习推文的上下文信息,再在BiLSTM模型后引入CNN层,进行局部特征的提取,最后使用全连接层将经过池化的特征连接在一起,并应用softmax函数进行四分类。模型在自主构建的中文推特黑灰产推文数据集上进行实验,并使用TextCNN、TextRNN、TextRCNN三种分类模型作为对比实验,实验结果显示,所提的BiLSTM-CNN推文分类模型在对四类推文进行分类的宏准确率为98.32%,明显高于TextCNN、TextRNN和TextRCNN三种模型的准确率。

关键词：文本分类双向长短期记忆网络(BiLSTM) 卷积神经网络(CNN) 黑灰产推特

ICL植入术后黄斑区节细胞-内丛状层及视网膜厚度的变化

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国际眼科杂志 2019年第8期19卷 1419-1423页

作者：袁幽朱秋健王梦雨余鹏梁小锁肖海祥马烈苏州大学附属理想眼科医院

目的:应用OCT观察ICL植入术后黄斑区节细胞-内丛状层及中央区视网膜厚度的改变,明确ICL植入术对于眼后节的影响。方法:前瞻性研究。最终纳入行ICL植入术患者26例41眼,平均年龄28.19±6.48岁。所有受试者均行眼轴长度(AL)、裸眼视力(UCVA... 详细信息

目的:应用OCT观察ICL植入术后黄斑区节细胞-内丛状层及中央区视网膜厚度的改变,明确ICL植入术对于眼后节的影响。方法:前瞻性研究。最终纳入行ICL植入术患者26例41眼,平均年龄28.19±6.48岁。所有受试者均行眼轴长度(AL)、裸眼视力(UCVA)、综合验光、最佳矫正视力(BCVA)、眼压(IOP)及OCT检查。观察术前及术后的中央区视网膜厚度(CRT)和节细胞-内丛状层厚度(GCT),以及UCVA、BCVA和IOP的变化。结果:ICL植入术后UCVA和BCVA较术前均有提高(P<0.05),而眼压无变化。术前,术后1wk,1、3mo CRT分别为273.20±25.48、274.07±27.64、277.85±25.49、275.99±24.68μm,而GCT分别为85.31±5.19、88.95±6.87、87.73±4.23、87.45±4.59μm(均P<0.05),其中CRT在术后1mo较术前有增加(P<0.01),GCT在术后1wk,1、3mo均比术前有增加(P<0.05)。GCT在术后1wk的变化与AL呈正相关(r s=0.529,P=0.001)。结论:ICL植入术具有良好的有效性及一定的安全性,但术后也会发生一定的黄斑区改变,需给予一定的重视。

关键词： ICL植入术节细胞-内丛状层黄斑厚度 OCT

Pharmacological targeting cGAS/STING/NF-κB axis by tryptanthrin induces microglia polarization toward M2 phenotype and promotes functional recovery in a mouse model of spinal cord injury

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Neural Regeneration Research 2025年第11期20卷 3287-3301页

作者： Ziwei Fan Mengxian Jia jian Zhou Zhoule zhu Yumin Wu Xiaowu Lin Yiming Qian Jiashu Lian Xin Hua jianhong Dong Zheyu Fang Yuqing Liu Sibing Chen Xiumin Xue Juanqing Yue Minyu zhu Ying Wang Zhihui Huang Honglin Teng Department of Orthopedics(Spine Surgery) the First Affiliated Hospital of Wenzhou Medical UniversityWenzhouZhejiang ProvinceChina School of Pharmacy Hangzhou Normal UniversityHangzhouZhejiang ProvinceChina Department of Neurology The First Affiliated Hospital of Wenzhou Medical UniversityWenzhouZhejiang ProvinceChina Department of Pathology Affiliated Hangzhou First People’s HospitalSchool of MedicineWestlake UniversityHangzhouZhejiang ProvinceChina Department of Clinical Research Center Affiliated Hangzhou First People’s HospitalSchool of MedicineWestlake UniversityHangzhouZhejiang ProvinceChina

The M1/M2 phenotypic shift of microglia after spinal cord injury plays an important role in the regulation of neuroinflammation during the secondary injury phase of spinal cord *** of shifting microglia polarization from M1(neurotoxic and proinflammatory type)to M2(neuroprotective and anti-inflammatory type)after spinal cord injury appears to be *** possesses an anti-inflammatory biological ***,its roles and the underlying molecular mechanisms in spinal cord injury remain *** this study,we found that tryptanthrin inhibited microglia-derived inflammation by promoting polarization to the M2 phenotype in *** promoted M2 polarization through inactivating the cGAS/STING/NF-κB ***,we found that targeting the cGAS/STING/NF-κB pathway with tryptanthrin shifted microglia from the M1 to M2 phenotype after spinal cord injury,inhibited neuronal loss,and promoted tissue repair and functional recovery in a mouse model of spinal cord ***,using a conditional co-culture system,we found that microglia treated with tryptanthrin suppressed endoplasmic reticulum stress-related neuronal *** together,these results suggest that by targeting the cGAS/STING/NF-κB axis,tryptanthrin attenuates microglia-derived neuroinflammation and promotes functional recovery after spinal cord injury through shifting microglia polarization to the M2 phenotype.

关键词： cGAS/STING functional recovery microglia neuroinflammation neuroprotection nuclear factor-κB polarization spinal cord injury tryptanthrin

Production of ammonia from plasma-catalytic decomposition of urea: Effects of carrier gas composition

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Journal of Environmental Sciences 2018年第4期30卷 94-103页

作者： Xing Fan jian Li Danqi qiu Tianle zhu Key Laboratory of Beijing on Regional Air Pollution Control College of Environmental and Energy EngineeringBeijing University of Technology School of Space and Environment Beihang University

Effects of carrier gas composition（N2/air） on NH3 production, energy efficiency regarding NH3 production and byproducts formation from plasma-catalytic decomposition of urea were systematically investigated using an Al2 O3-packed dielectric barrier discharge（DBD） reactor at room temperature. Results show that the presence of O2 in the carrier gas accelerates the conversion of urea but leads to less generation of NH3. The final yield of NH3 in the gas phase decreased from 70.5%, 78.7%, 66.6% and 67.2% to 54.1%, 51.7%, 49.6% and 53.4% for applied voltages of 17, 19, 21 and 23 kV, respectively when air was used as the carrier gas instead of *** the viewpoint of energy savings, however, air carrier gas is better than N2 due to reduced energy consumption and increased energy efficiency for decomposition of a fixed amount of urea. Carrier gas composition has little influence on the major decomposition pathways of urea under the synergetic effects of plasma and Al2 O3 catalyst to give NH3 and CO2 as the main products. Compared to a small amount of N2 O formed with N2 as the carrier gas, however,more byproducts including N2O and NO2 in the gas phase and NH4 NO3 in solid deposits were produced with air as the carrier gas, probably due to the unproductive consumption of NH3, the possible intermediate HNCO and even urea by the abundant active oxygen species and nitrogen oxides generated in air-DBD plasma.

关键词： Ammonia production Urea decomposition Dielectric barrier discharge(DBD) plasma Al2O3 catalyst Carrier gas composition

人工配合饲料与小杂鱼饲养赤点石斑鱼效果的对比试验

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台湾海峡 2004年第2期23卷 167-173页

作者：李金秋林建斌朱庆国李传亮福建省淡水水产研究所福建福州350002

本试验分别以配合饲料、小杂鱼饲养赤点石斑鱼,观察不同饲料对其生长和养殖水体氮、磷含量变化的影响.经过42d的饲养,投喂配合饲料的试验组与投喂小杂鱼的对照组尾平均日增重分别为0.60、0.50g/尾,饲料系数分别为2.34、7.90.赤点石斑鱼... 详细信息

本试验分别以配合饲料、小杂鱼饲养赤点石斑鱼,观察不同饲料对其生长和养殖水体氮、磷含量变化的影响.经过42d的饲养,投喂配合饲料的试验组与投喂小杂鱼的对照组尾平均日增重分别为0.60、0.50g/尾,饲料系数分别为2.34、7.90.赤点石斑鱼摄食后水体中的NH3 N、NO2 N、TP含量随着其摄食后时间的延长呈先升高后下降的趋势,NH3 N、TP含量在鱼摄食后18～22h内达到高峰,NO2 N含量在鱼摄食后10～14h达到高峰.试验组水体的NH3 N含量低于对照组(p<0.01),NO2 N含量在排泄高峰期也低于对照组(p<0.10),TP含量在鱼排泄高峰期高于对照组(p<0.05).

关键词：水产养殖学饲养效果对比试验赤点石斑鱼配合饲料小杂鱼生长氮磷

Transient stochastic response of quasi integerable Hamiltonian systems

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Acta Mechanica Sinica 2013年第4期29卷 602-611页

作者： Zhong-Hua Liu jian-Hua Geng Wei-qiu zhu Department of Civil Engineering Xiamen University Department of Mechanics State Key Laboratory of Fluid Power Transmission and Control Zhejiang University

The approximate transient response of quasi in- tegrable Hamiltonian systems under Gaussian white noise excitations is investigated. First, the averaged It6 equa- tions for independent motion integrals and the associated Fokker-Planck-Kolmogorov （FPK） equation governing the transient probability density of independent motion integrals of the system are derived by applying the stochastic averag- ing method for quasi integrable Hamiltonian systems. Then, approximate solution of the transient probability density of independent motion integrals is obtained by applying the Galerkin method to solve the FPK equation. The approxi- mate transient solution is expressed as a series in terms of properly selected base functions with time-dependent coeffi- cients. The transient probability densities of displacements and velocities can be derived from that of independent mo- tion integrals. Three examples are given to illustrate the ap- plication of the proposed procedure. It is shown that the re- suits for the three examples obtained by using the proposed procedure agree well with those from Monte Carlo simula- tion of the original systems.

关键词： Transient response ~ Stochastic averagingmethod ~ Galerkin method ~ Quasi integrable Hamiltoniansystem