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Vapor-Induced Coating Method for Well-Aligned and Uniform Organic Semiconductor Single Crystals

Chinese Journal of Polymer Science 2023年第10期41卷 1638-1645页

作者： Lu-Jing Shao Sheng-Nan Chen Yu-Meng Wang Zheng Li xiao-song shi Hao-Ran Long Lang Jiang Jue-Han Yang Ya-Li Qiao Yan-Lin song Key Laboratory of Green Printing Institute of ChemistryChinese Academy of SciencesResearch Center of Nanomaterials for Green Printing TechnologyBeijing National Laboratory for Molecular Sciences(BNLMS)Beijing100190China School of Chemical Science University of Chinese Academy of SciencesBeijing100049China State Key Laboratory of Trauma Burn and Combined InjuryInstitute of Burn ResearchSouthwest HospitalArmy Medical UniversityChongqing400038China Key Laboratory of Organic Solids Beijing National Laboratory for Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing100190China State Key Laboratory of Superlattices and Microstructures Institute of SemiconductorsChinese Academy of SciencesBeijing100083China

Uniform and well-aligned organic semiconductor single crystals(OSSCs)are critical for high-performance electronic and optoelectronic device applications due to their long-range order and low defect ***,it is still challenging to fabricate uniform and well-aligned OSSCs by an efficient and facile ***,we report a vapor-induced coating method to prepare uniform organic semiconductor stripe single crystals with well-aligned *** coating velocity and solution concentration are important to control the stripe crystals’morphology,which influence the triple-phase contact line dewetting behavior and then change the mass transport of the *** solute supply causes the generation of dendritic *** stripe single crystals of high quality and pure orientation are prepared in the condition of a sufficient and suitable solute ***,the electronic and optoelectronic properties are ***,the polarization-sensitive photodetectors based on the uniform stripe crystals exhibit high polarization sensitivity and its dichroic ratio of photocurrent is *** method is efficient for the preparation of various high-quality and uniform organic semiconductor stripe single crystals,opening an opportunity for high-performance organic functional devices.

关键词： Vapor-induced coating Marangoni flow Organic single crystals Organic field-effect transistors Polarization-sensitive photodetectors

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Tangled but ordered human mitochondrial tRNA maturation

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Science China Life Sciences 2025年

作者： shi-Ying Yao xiao-Long Zhou Key Laboratory of RNA Innovation Science and Engineering CAS Center for Excellence in Molecular Cell Science Shanghai Institute of Biochemistry and Cell Biology Chinese Academy of Sciences University of Chinese Academy of Sciences Key Laboratory of Systems Health Science of Zhejiang Province School of Life Science Hangzhou Institute for Advanced Study University of Chinese Academy of Sciences

Mitochondria are cellular organelles that originate from an endosymbiotic bacterial ancestor and are primarily responsible for ATP generation via oxidative phosphorylation (OXPHOS). OXPHOS is conducted by five mitochondrial respiratory complexes in the inner mitochondrial membrane. Human mitochondria possess a distinct genome, a small, circular, doublestranded DNA (mtDNA) of 16,569 base pairs.

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四杆张拉整体单元的弯曲变形

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光学精密工程 2021年第12期29卷 2806-2817页

作者：罗阿妮邹云涛肖诗松刘贺平哈尔滨工程大学机电工程学院黑龙江哈尔滨150001

为了扩大张拉整体的内部空间,实现展开前空间占用小,展开后内部空间的有效利用率高,对张拉整体轴向折叠方式及折展特性进行了研究。根据张拉整体的理论基础,介绍了节点矩阵、连接矩阵和构件矩阵,分析了张拉整体轴向折叠的意义以及存在... 详细信息

为了扩大张拉整体的内部空间,实现展开前空间占用小,展开后内部空间的有效利用率高,对张拉整体轴向折叠方式及折展特性进行了研究。根据张拉整体的理论基础,介绍了节点矩阵、连接矩阵和构件矩阵,分析了张拉整体轴向折叠的意义以及存在的问题,并介绍了两种张拉整体沿轴向折叠的方法。在这两种折叠方式的基础上提出弯杆张拉整体,并给出弯杆张拉整体节点坐标的求解方法。最后,分析弯杆张拉整体在完全展开状态直至上下水平面重合时的弹性变形量,利用有限元软件分析得到模型完全压缩时节点的弯曲角度临界值。高度为270 mm,半径为200 mm的四杆张拉整体在轴向完全压缩时,上、下底面的相对偏转角为57°,杆长压缩率为13%。利用竹节作为杆构件时弯曲节点连接两杆构件所成角度不得大于90°。张拉整体直杆变弯有效地解决了杆构件间的干涉问题,内部有效利用空间增大,实现了轴向折叠。

关键词：可展机构张拉整体空间利用率弯曲变形折叠

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miRNA-21-5p is an important contributor to the promotion of injured peripheral nerve regeneration using hypoxia-pretreated bone marrow-derived neural crest cells

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Neural Regeneration Research 2025年第1期20卷 277-290页

作者： Meng Cong Jing-Jing Hu Yan Yu xiao-Li Li xiao-Ting Sun Li-Ting Wang Xia Wu Ling-Jie Zhu xiao-Jia Yang Qian-Ru He Fei Ding Hai-Yan shi School of Medicine Nantong UniversityNantongJiangsu ProvinceChina Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education and Coinnovation Center of Neuroregeneration Nantong UniversityNantongJiangsu ProvinceChina Department of Physiology Jiangsu Health Vocational CollegeNanjingJiangsu ProvinceChina Department of Pathology Affiliated Hospital of Nantong UniversityNantongJiangsu ProvinceChina Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair Affiliated Hospital of Nantong UniversityNantongJiangsu ProvinceChina

Our previous study found that rat bone marrow–derived neural crest cells(acting as Schwann cell progenitors)have the potential to promote long-distance nerve ***-based therapy can enhance peripheral nerve repair and regeneration through paracrine bioactive factors and intercellular ***,the complex contributions of various types of soluble cytokines and extracellular vesicle cargos to the secretome remain *** investigate the role of the secretome and extracellular vesicles in repairing damaged peripheral nerves,we collected conditioned culture medium from hypoxia-pretreated neural crest cells,and found that it significantly promoted the repair of sensory neurons damaged by oxygen-glucose *** mRNA expression of trophic factors was highly expressed in hypoxia-pretreated neural crest *** performed RNA sequencing and bioinformatics analysis and found that miR-21-5p was enriched in hypoxia-pretreated extracellular vesicles of neural crest ***,to further clarify the role of hypoxia-pretreated neural crest cell extracellular vesicles rich in miR-21-5p in axonal growth and regeneration of sensory neurons,we used a microfluidic axonal dissociation model of sensory neurons in vitro,and found that hypoxia-pretreated neural crest cell extracellular vesicles promoted axonal growth and regeneration of sensory neurons,which was greatly dependent on loaded ***,we constructed a miR-21-5p-loaded neural conduit to repair the sciatic nerve defect in rats and found that the motor and sensory functions of injured rat hind limb,as well as muscle tissue morphology of the hind limbs,were obviously *** findings suggest that hypoxia-pretreated neural crest extracellular vesicles are natural nanoparticles rich in ***-21-5p is one of the main contributors to promoting nerve regeneration by the neural crest cell *** helps to explain the mechanism of action of the secretome and e

关键词： axotomy cell-free therapy conditioned medium extracellular vesicles hypoxic preconditioning microRNA oxygen-glucose deprivation peripheral nerve injury Schwann cell precursors

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Carbon dots self-assembly enables near-infrared emission

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Science China Chemistry 2025年

作者： Shurong Ding Shasha Liu Yuzhuo Yang Linlin shi Yongqiang Zhang Jingkun Yu Haoqiang song Yingge shi Siyu Lu College of Chemistry Pingyuan Laboratory Zhengzhou University Henan Institute of Advanced Technology Zhengzhou University

In the fields of biomedicine, detection, and anti-counterfeiting, there is a widespread demand for cost-effective, easily synthesized, and environmentally friendly near-infrared(NIR) materials. Carbon dots(CDs), a cheap and non-toxic zero-dimensional carbon nanomaterial exhibiting exceptional photoluminescence(PL) properties and facile structural modification, have emerged as a promising candidate for the development of novel NIR materials. This study presents the synthesis of CDs capable of emitting a wide range of wavelengths from blue to NIR(456–836 nm) as their concentrations increase. The incorporation of oxygen and nitrogen co-doped atoms facilitates the optimization of non-coplanar angles, thereby promoting favorable π-πstacking interactions. This leads to the formation of metal-free rigid clusters through interconnecting adjacent nanoparticles in a gear-like meshing pattern through self-assembly. Consequently, intramolecular motion is constrained, vibration coupling is mitigated, non-radiative transition losses are minimized, and efficient NIR emission from CD clusters in high concentrations is ensured. Furthermore, NIR light-emitting diode(NIR LED) based on the CD clusters was successfully fabricated and employed for various applications including information encryption, anti-counterfeiting, and penetration detection in the field of NIR imaging.

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台风风暴潮债券定价——基于我国沿海1989～2015灾害数据

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系统工程 2017年第9期35卷 18-26页

作者：马宗刚马超群肖时松广东财经大学金融学院广东广州510320 湖南大学工商管理学院湖南长沙410082

随着沿海经济的发展,风暴潮灾害是我国沿海地区面临最主要的自然灾害之一,严重阻碍了经济的可持续发展,而巨灾债券作为一种非传统巨灾风险对冲工具可有效转移巨灾风险。本文基于风险中性测度技术导出了零息票巨灾债券定价公式,并针对重... 详细信息

随着沿海经济的发展,风暴潮灾害是我国沿海地区面临最主要的自然灾害之一,严重阻碍了经济的可持续发展,而巨灾债券作为一种非传统巨灾风险对冲工具可有效转移巨灾风险。本文基于风险中性测度技术导出了零息票巨灾债券定价公式,并针对重大风暴潮事件造成经济损失的极端特征,采用极值理论中的门限峰值(POT)法研究了风暴潮灾害损失分布的尾部特征。进一步结合我国沿海1989年1月至2015年12月风暴潮直接经济损失数据,研究发现利用门限峰值法重构数据后,广义帕累托分布拟合我国沿海风暴潮损失尾部数据比对数正态、威布尔、伽马等传统厚尾分布拟合效果更好。进而估计并校准了定价模型中的参数,同时给出了一种混合逼近方法对定价模型进行数值求解。最后,数值结果表明巨灾债券价格随着合约期限的增加而减少,随着门限水平的提高而升高,从而验证了定价模型的可行性。

关键词：台风债券极值分布逼近算法探索性数据分析

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Inhibition of the NLRP3 inflammasome attenuates spiral ganglion neuron degeneration in aminoglycoside-induced hearing loss

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Neural Regeneration Research 2025年第10期20卷 3025-3039页

作者： Jia Fang Zhuangzhuang Li Pengjun Wang xiaoxu Zhang song Mao Yini Li Dongzhen Yu xiaoyan Li Yazhi Xing Haibo shi Shankai Yin Department of Otolaryngology Head and Neck Surgery Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of MedicineOtolaryngology Institute of Shanghai Jiao Tong UniversityShanghai Key Laboratory of Sleep Disordered BreathingShanghaiChina Department of Otorhinolaryngology-Head and Neck Surgery Shanghai Children’s HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghaiChina

Aminoglycosides are a widely used class of antibacterials renowned for their effectiveness and broad antimicrobial ***,their use leads to irreversible hearing damage by causing apoptosis of hair cells as their direct *** addition,the hearing damage caused by aminoglycosides involves damage of spiral ganglion neurons upon *** investigate the mechanisms underlying spiral ganglion neuron degeneration induced by aminoglycosides,we used a C57BL/6J mouse model treated with *** found that the mice exhibited auditory deficits following the acute loss of outer hair *** ganglion neurons displayed hallmarks of pyroptosis and exhibited progressive degeneration over *** profiling of these neurons showed significant upregulation of genes associated with inflammation and immune response,particularly those related to the NLRP3 *** of the canonical pyroptotic pathway in spiral ganglion neurons was observed,accompanied by infiltration of macrophages and the release of proinflammatory *** intervention targeting NLRP3 using Mcc950 and genetic intervention using NLRP3 knockout ameliorated spiral ganglion neuron degeneration in the injury *** findings suggest that NLRP3 inflammasome-mediated pyroptosis plays a role in aminoglycoside-induced spiral ganglion neuron *** of this pathway may offer a potential therapeutic strategy for treating sensorineural hearing loss by reducing spiral ganglion neuron degeneration.

关键词： degeneration hearing loss macrophages Mcc950 neuroinflammation NLRP3 inflammasome ototoxicity pyroptosis sensorineural hearing loss spiral ganglion neuron

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Translation of steel surface defect detection algorithm with fusion of multiple attention detection heads

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Optoelectronics Letters 2025年

作者： shi Tao CUI Jie LI song Tianjin University of Technology， School of Electrical Engineering and Automation North China University of Science and Technology， School of Electrical Engineering

This paper proposes an end-to-end defect detection algorithm model called YOLOv5-CJ to address the issues of missed detections and low accuracy in visual steel surface defect detection. By incorporating the C3＿MSBlock module， which is designed based on Res2Net and contains multi-scale information， into the backbone network， the model can represent multi-scale features at a finer granularity level and increase the network's receptive field. In the detection head， the DyHead attention mechanism is introduced， which integrates scale awareness， spatial awareness， and task awareness， to help the model better cope with complex industrial scenes with large background interference， significant defect scale variations， and easily confused defect categories. Soft NMS is employed to enhance the recognition capability in overlapping regions. Experimental results demonstrate that the proposed YOLOv5-CJ model outperforms YOLOv5s，achieving an average precision (mAP0.5 and mAP0.5:0.95) improvement of 1.9% and 7.2% on the NEU-DET dataset， and 5.3% and 4.3% on the GC10-DET dataset， respectively， validating the feasibility and effectiveness of the proposed model.

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Ad Hoc网络中基于粒子群优化的QoS多播路由研究

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微电子学与计算机 2006年第9期23卷 41-43页

作者：王楷肖诗松赵锦元华中师范大学计算机科学系湖北武汉430079

针对AdHoc网络中带QoS约束的多播路由问题,提出了一种新的结合MAODV多播路由发现方法和粒子群优化算法的QoS多播路由发现算法。仿真试验显示该算法较好地改进了端到端传输的代价、延时和带宽利用率,能够找到一棵消耗趋于最小、状态稳定... 详细信息

针对AdHoc网络中带QoS约束的多播路由问题,提出了一种新的结合MAODV多播路由发现方法和粒子群优化算法的QoS多播路由发现算法。仿真试验显示该算法较好地改进了端到端传输的代价、延时和带宽利用率,能够找到一棵消耗趋于最小、状态稳定的多播路由树。

关键词： Ad Hoc网络粒子群优化 QoS 多播路由 MAODV

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EBD-YOLO：a lightweight auxiliary driving detection algorithm based on YOLOv5

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Optoelectronics Letters 2025年

作者： SUN Lianshuai shi Tao DING Yao LI song Tianjin Key Laboratory for Control Theory and Applications in Complicated Systems， School of Electrical Engineer-ing and Automation， Tianjin University of Technology College of Electrical Engineering， North China University of Science and Technology

A lightweight road-assistant detection algorithm， EBD-YOLO， based on YOLOv5s is proposed to address the problems of high model complexity， computation cost， and difficulty in deployment on resource-limited embedded terminals in existing assisted driving detection algorithms. First， lightweight Transformer model EfficientViT was used as the backbone feature extraction network of YOLOv5s model to reduce network parameters and calculation costs. Secondly， a Focal-GIoU Loss function is proposed for bounding box regression to accelerate model convergence and reduce loss. Thirdly， the feature pyramid structure is improved to a weighted bi-directional feature pyramid network (BiFPN) to enhance localization and semantic features. Then， a dynamic head framework is added to unify the attention mechanism with the object detection head to improve its performance. Finally， a Soft-CIoU＿NMS algorithm is proposed in the post-processing stage to enhance occluded targets' localization and detection ability and reduce the missed detection rate. We conducted experiments on the KITTI and BDD100K datasets for autonomous driving， and the results showed that the EBD-YOLO model reduced in size by 38.4% and 37.2%， respectively. In comparison， the computational cost was reduced by 48.1%. As measured by mAP@0.5， the detection accuracy improved by 0.5% and 5.8%， respectively， and mAP@0.5:0.95 improved by 2.8% and 7%， respectively. These improvements satisfied the requirements for deployment on embedded terminals in cars.

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